Company lists · Data refreshed September 2026

Top 18 Response marketing agencies based in London, Canada

Name: Response marketing agencies 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 50 companies tracked

RevenueBase identified 50 response marketing agencies headquartered in London, Canada as of September 2026 and tracks 480 professional contacts across them, including 117 with verified work emails. Toronto is the largest hub.

This list covers response marketing agencies 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

50Companies

480Contacts tracked

117Verified emails

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The 18 largest response marketing agencies based in London, Canada

Ranked by team size

Top 18 of 50 response marketing agencies 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 response marketing agencies: 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	TBKIndirect evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	32
	“tbk is an award-winning, full-service agency headquartered in London, Ontario that leads brands to better.” Source: company website · checked Sep 5, 2026
2	TMD The Marketing DepartmentPartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	26
	“TMD \| The Marketing Department is a strategic marketing and communications company.” Source: company website · checked Sep 5, 2026
3	Redrhino INCIndirect evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	26
	“The Rhinos are a wildly talented team of just over 30 digital dreamers and brand believers sized just right so that we’re easy to work with and give you big agency capabilities.” Source: company website · checked Sep 5, 2026
4	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
5	Sparks Marketing CommunicationsIndirect evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	19
	“For brands that need to be experienced.” Source: company website · checked Sep 5, 2026
6	Adhome CreativePartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	16
	“adHOME creative is a full-service advertising & digital agency with in-depth expertise in branding, digital, traditional and shopper marketing.” Source: company website · checked Sep 5, 2026
7	BrantonPartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	15
	“As a well-established advertising firm in London for over 30 years, Branton Advertising has been providing small businesses and large corporations with marketing and advertising…” Source: company website · checked Sep 5, 2026
8	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
9	Link Advertising And AssociatesIndirect evidence	London, ON, CanadaHQ checked Sep 5, 2026	1-10	7
	“Link Advertising is a full service advertising agency in London, Ontario.” Source: company website · checked Sep 5, 2026
10	Slyfox WEB Design & MarketingIndirect evidence	London, ON, CanadaHQ checked Sep 5, 2026	11-50	6
	“Every action has a purpose.” Source: company website · checked Sep 5, 2026
11	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
12	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
13	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
14	Plasmid144 Digital MarketingIndirect evidence	London, ON, CanadaHQ checked Sep 5, 2026	1-10	3
	“Plasmid144 is here to create the very best websites and digital campaigns for your online businesses.” Source: company website · checked Sep 5, 2026
15	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
16	Sator DigitalPartial evidence	London, ON, CanadaHQ checked Sep 5, 2026	1-10	3
	“We are a digital marketing agency that works with businesses to create effective digital solutions that lead to optimizing results.” Source: company website · checked Sep 5, 2026
17	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
18	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 18 of 50 response marketing agencies based in London, Canada

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Response marketing agencies based in London, Canada at a glance

As of Sep 5, 2026

1-10Median size (employees)

TorontoLargest hub · 819 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 50 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 response marketing agencies, 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 “response marketing agencies”. 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 response marketing agencies, 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, 117 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.

Response marketing agencies by metro in Canada

Frequently asked

How many response marketing agencies are there based in London, Canada?

RevenueBase identified 50 response marketing agencies 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?

TBK, headquartered in London, tops this list with the largest team on record.

Which city has the most response marketing agencies?

Toronto leads with 819 headquartered companies, followed by Vancouver (281) and Montreal (250).

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 117 verified decision-maker contacts tracked across these 50 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 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.