Company lists · Data refreshed September 2026

Top 15 Marketing staffing based in London, Canada

Name: Marketing staffing based in London, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 39 companies tracked

RevenueBase identified 39 marketing staffing headquartered in London, Canada as of September 2026 and tracks 243 professional contacts across them, including 66 with verified work emails. Toronto is the largest hub.

This list covers marketing staffing headquartered in London, Canada, 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, how directly it supports the match, 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 SmartSearch, 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 Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

39Companies

243Contacts tracked

66Verified emails

Unlock all 39 companies Free signup · no credit card · 500 free credits

The 15 largest marketing staffing based in London, Canada

Ranked by team size

Top 15 of 39 marketing staffing based in London, Canada, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names marketing staffing: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Express Employment Professionals - London, OnPartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	34
	“Express Employment Professionals is a leading staffing provider in the U.S, Canada and South Africa.” Source: company website · checked Sep 5, 2026
2	Giant CreativePartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	23
	“We are GIANT Creative… An award-winning multichannel marketing agency on a mission to deliver enormous results with meticulous strategy and scroll-stopping creative.” Source: company website · checked Sep 5, 2026
3	JWA GroupPartial evidence	London, CanadaHQ checked Sep 5, 2026	11-50	18
	“We generate business results for North American corporations through sales and marketing communications solutions.” Source: company website · checked Sep 5, 2026
4	Allstaff INCPartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	17
	“Thousands of great people found work through AllStaff; North America's most powerful staffing resource.” Source: company website · checked Sep 5, 2026
5	FounderyPartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	14
	“Foundery Digital Marketing Group is a London, Ontario–based digital marketing agency helping brands grow market share, leads, and long-term visibility across both search engines…” Source: company website · checked Sep 5, 2026
6	Keyframe CommunicationsPartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	12
	“To say Keyframe Communications is a full-service digital marketing and production team is a tremendous understatement.” Source: company website · checked Sep 5, 2026
7	Reux Marketing AgencyIndirect evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	10
	“Hi there, we're reux!” Source: company website · checked Sep 5, 2026
8	Roberts MarketingPartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	1-10	6
	“Creating Custom Marketing Solutions Roberts Marketing bridges the gap between traditional & digital media.” Source: company website · checked Sep 5, 2026
9	Digital Clicks MarketingIndirect evidence	London, ON, CanadaHQ checked Sep 5, 2026	1-10	6
	“At Digital Clicks, we have a deep understanding of the digital platforms, strategies and tactics to fuel your online goals.” Source: company website · checked Sep 5, 2026
10	Interweave Media GroupPartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	1-10	6
	“Interweave is a Southwestern Ontario-based, full-service digital marketing agency that consists of content creation and marketing specialists.” Source: company website · checked Sep 5, 2026
11	Momentum360 MarketingIndirect evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	6
	“VELOCITY GROWTH ACCELERATOR - Get More Paying Customers!” Source: company website · checked Sep 5, 2026
12	Ascendant Arrow INCPartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	1-10	3
	“Results-driven marketing agency with outstanding track-record.” Source: company website · checked Sep 5, 2026
13	Publiq MediaPartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	1-10	3
	“Welcome to Publiq Media, the digital marketing wizards based in the heart of London, Ontario.” Source: company website · checked Sep 5, 2026
14	Studio EFFIndirect evidence	London, ON, CanadaHQ checked Sep 5, 2026	1-10	2
	“Endless false promises, manipulated reports, never-ending excuses for delays, incompetence and unnecessary use of jargons by industry experts made us realize how much BS there is…” Source: company website · checked Sep 5, 2026
15	GOT Game MarketingPartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	1-10	1
	“In the world of digital marketing, the game is ever-changing and often confusing - we know this, because we’ve been there.” Source: company website · checked Sep 5, 2026

Showing 15 of 39 marketing staffing based in London, Canada

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 66 reachable decision-makers.

Free signup · no credit card

See all 39 companies

Marketing staffing based in London, Canada at a glance

As of Sep 5, 2026

1-10Median size (employees)

TorontoLargest hub · 949 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

Email recency for this list is measured across the whole Canada list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for London, over 39 companies.

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 marketing staffing, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in London, Canada whose own description of what they do matches “marketing staffing”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among marketing staffing, and records with no verified work email. Companies headquartered outside London 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 an evidence 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, 66 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.

Marketing staffing by metro in Canada

Frequently asked

How many marketing staffing are there based in London, Canada?

RevenueBase identified 39 marketing staffing headquartered in London, Canada 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?

Express Employment Professionals - London, On, headquartered in London, tops this list with the largest team on record.

Which city has the most marketing staffing?

Toronto leads with 949 headquartered companies, followed by Vancouver (323) and Montreal (276).

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 66 verified decision-maker contacts tracked across these 39 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.

Ready to reach these companies? Verified emails and direct dials for all 39 marketing staffing based in London, Canada. Start with a free account, no credit card.

Get the full list

Related lists

Marketing staffing by geography

Browse the directory

Browse: Companies home · Marketing staffing in Canada · All Canada lists · All Marketing staffing lists · New lists

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 SmartSearch, 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.