Company lists · Data refreshed September 2026

Top 25 Online auction platforms based in the United Kingdom

Name: Online auction platforms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 166 companies tracked

RevenueBase identified 166 online auction platforms headquartered in the United Kingdom as of September 2026 and tracks 1,456 professional contacts across them, including 616 with verified work emails and 197 with mobile numbers. London is the largest hub.

This list covers online auction platforms headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

166Companies

1,456Contacts tracked

616Verified emails

197Mobile numbers

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The 25 largest online auction platforms based in the United Kingdom

Ranked by team size

Top 25 of 166 online auction platforms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to online auction platforms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	ATG Auction Technology Group	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	201-500	371 contacts →
	Partial evidence “A global technology company with over 450 employees, ATG is transforming the way billions of pounds, euros and dollars' worth of items are bought and sold globally via auction.” Source: RevenueBase Database · checked Sep 5, 2026
2	gumtree.com	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	209 contacts →
	Strong evidence “Gumtree is one of the UK’s most popular online classifieds platforms, connecting millions of people every month to buy, sell, and trade locally - something we’ve done since But…” Source: RevenueBase Database · checked Sep 5, 2026
3	Euro Auctions	Partial evidence	Dromore, United KingdomHQ checked Sep 5, 2026	51-200	127 contacts →
	Partial evidence “Euro Auctions has been specializing in conducting unreserved auctions of Industrial Equipment and Construction Machinery since 1998 and continues to go from strength to strength.” Source: RevenueBase Database · checked Sep 5, 2026
4	Collecting Cars	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	75 contacts →
	Strong evidence “Collecting Cars is the leading global digital auction platform for collectible cars, bikes, and automobilia.” Source: RevenueBase Database · checked Sep 5, 2026
5	Town And Country Property Auctions	Partial evidence	Chester, United KingdomHQ checked Sep 5, 2026	11-50	39 contacts →
	Partial evidence “We’re transforming property auctions, making buying and selling fast, fuss-free, and secure.” Source: RevenueBase Database · checked Sep 5, 2026
6	BIDOO	Indirect evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	38 contacts →
	Indirect evidence “Be part of the world's most entertaining, unconventional and revolutionary e-commerce company and work daily with your favourite brands.” Source: RevenueBase Database · checked Sep 5, 2026
7	Simon Charles Auctioneers	Partial evidence	Stockport, United KingdomHQ checked Sep 5, 2026	51-200	26 contacts →
	Partial evidence “We are one of Europe's largest auctioneers, with over 70 years' auction experience, we work with top retailers, distributors and manufacturers to bring well-known brands to…” Source: RevenueBase Database · checked Sep 5, 2026
8	Under The Hammer	Strong evidence	Nationwide, United KingdomHQ checked Sep 5, 2026	11-50	24 contacts →
	Strong evidence “Under the Hammer is the UK's online property auction platform.” Source: RevenueBase Database · checked Sep 5, 2026
9	Easy Live Auction	Strong evidence	Eastbourne, United KingdomHQ checked Sep 5, 2026	11-50	22 contacts →
	Strong evidence “Live Online Bidding at Real Auction Houses BROWSE, BID, BUY Products Live Auction Bidding Timed Auction Bidding Auction Management Software White Label Websites (Live/Timed…” Source: RevenueBase Database · checked Sep 5, 2026
10	Truck And Plant Asset Management Limited	Strong evidence	Swansea, United KingdomHQ checked Sep 5, 2026	11-50	19 contacts →
	Strong evidence “Online auction specialising in commercial vehicles and plant.” Source: RevenueBase Database · checked Sep 5, 2026
11	Wellers Auctions LTD	Strong evidence	Guildford, United KingdomHQ checked Sep 5, 2026	11-50	16 contacts →
	Strong evidence “Based in the heart of Surrey, Wellers Auctions, have a wealth of experience in bringing to you an exciting array of weekly & monthly auctions via live and timed auction platforms…” Source: RevenueBase Database · checked Sep 5, 2026
12	Artisio	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	15 contacts →
	Strong evidence “Artisio is a complete front-to-back auction management software solution & online bidding platform, that helps businesses run online auctions and streamline auction back office…” Source: RevenueBase Database · checked Sep 5, 2026
13	Novafori	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	51-200	15 contacts →
	Partial evidence “NovaFori specialises in designing, building and operating highly scalable marketplace solutions powered by auction and trading technology.” Source: RevenueBase Database · checked Sep 5, 2026
14	Auction Marketer	Partial evidence	Northampton, United KingdomHQ checked Sep 5, 2026	11-50	14 contacts →
	Partial evidence “Auction Marketer is a leading provider of cloud and desktop-based auction software, trusted by independent auctioneers and enterprise brands alike.” Source: RevenueBase Database · checked Sep 5, 2026
15	GBM Auctions	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	12 contacts →
	Partial evidence “GBM is the auction system where bidders make money when they are outbid.$200M+ in bidding volume and over $6M earned by bidders to date!” Source: RevenueBase Database · checked Sep 5, 2026
16	Watch Collecting	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	12 contacts →
	Partial evidence “Since launching in 2021, Collecting Cars sister brand Watch Collecting has quickly established itself as a leading platform for collectible fine watches, with over 4,500 lots sold…” Source: RevenueBase Database · checked Sep 5, 2026
17	Webuygymequipment	Indirect evidence	Northwich, United KingdomHQ checked Sep 5, 2026	11-50	10 contacts →
	Indirect evidence “WeBuyGymEquipment is the best way gym operators can maximise the amount of money they receive when trading-in their old fitness equipment.” Source: RevenueBase Database · checked Sep 5, 2026
18	Volo Commerce	Partial evidence	Cheltenham, United KingdomHQ checked Sep 5, 2026	11-50	10 contacts →
	Partial evidence “Volo provides an ecommerce platform, a reporting platform and services for multichannel sellers to grow sales on marketplaces like Amazon, eBay and OnBuy, and web stores like…” Source: RevenueBase Database · checked Sep 5, 2026
19	Bidlogix	Strong evidence	Brighton, United KingdomHQ checked Sep 5, 2026	11-50	10 contacts →
	Strong evidence “Bidlogix provides a complete solution for timed online auctions and webcast auctions.” Source: RevenueBase Database · checked Sep 5, 2026
20	Bonhams Cars Online	Strong evidence	Abingdon, United KingdomHQ checked Sep 5, 2026	11-50	9 contacts →
	Strong evidence “Bonhams Cars Online - Classic & Collectable Car Auctions \| FREE TO SELL \| Our mission is to make the buying and selling of classic and collector vehicles as transparent, secure…” Source: RevenueBase Database · checked Sep 5, 2026
21	The Auction Collective	Strong evidence	London, United KingdomHQ checked Sep 5, 2026	1-10	9 contacts →
	Strong evidence “The Auction Collective is dedicated to helping clients run professional online and in-person auctions, offering professional auction software and a range of additional auction…” Source: RevenueBase Database · checked Sep 5, 2026
22	Auction News	Strong evidence	Derby, United KingdomHQ checked Sep 5, 2026	1-10	9 contacts →
	Strong evidence “Auction News is the UK’s longest-standing digital auction marketing and media platform.” Source: RevenueBase Database · checked Sep 5, 2026
23	William George	Indirect evidence	Stamford, United KingdomHQ checked Sep 5, 2026	1-10	9 contacts →
	Indirect evidence “Founded in 2012, William George has consistently grown and continues to flourish and innovate.” Source: RevenueBase Database · checked Sep 5, 2026
24	Cottrill & CO	Strong evidence	Birmingham, United KingdomHQ checked Sep 5, 2026	11-50	8 contacts →
	Strong evidence “We are focused predominantly as Online Auctioneers, selling all types of manufacturing assets worldwide.” Source: RevenueBase Database · checked Sep 5, 2026
25	Whoobid Property Auctioneers	Partial evidence	London, United KingdomHQ checked Sep 5, 2026	11-50	8 contacts →
	Partial evidence “In a market where online estate agencies are having an ever increasing share of the market and consumer demands are leading towards online services, Whoobid have taken the…” Source: RevenueBase Database · checked Sep 5, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: online auction platforms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names online auction platforms.
Partial evidence: Its own public description names part of online auction platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name online auction platforms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 166 online auction platforms based in the United Kingdom

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Online auction platforms based in the United Kingdom at a glance

As of Sep 5, 2026

42.3%Verified-email coverage

13.5%Mobile-number coverage

8.8Average contacts per company

1-10Median size (employees)

30.7%Largest-city concentration · London

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

103

11-50

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

5870–30

2331–60

061–90

190–180

5180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among online auction platforms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United Kingdom whose own description of what they do matches “online auction platforms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names online auction platforms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among online auction platforms, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 616 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Online auction platforms by metro

Online auction platforms in London51

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names online auction platforms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many online auction platforms are there based in the United Kingdom?

RevenueBase identified 166 online auction platforms headquartered in the United Kingdom as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

ATG Auction Technology Group, headquartered in London, tops this list with the largest team on record.

Which city has the most online auction platforms?

London leads with 51 headquartered companies, followed by Birmingham (3) and Abingdon (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 616 verified decision-maker contacts tracked across these 166 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.