TopLine Comms

What TopLine Comms does

TopLine Comms (doing business as Definition) is a London-based, privately held integrated B2B PR and communications agency founded in 2008. It operates from a single UK hub with 11-50 employees and serves enterprise B2B clients through a sales-led, consultative go-to-market motion across sectors including technology, fintech, professional services, engineering/industrial, and third-sector/social impact. Named customers include Amazon, Xero, BNP Paribas, Honda, British Land, Checkout.com, Bullhorn, Clio, Winston & Strawn, Cielo, and Air Astana, with additional engagements across the USA, France, Japan, and New Zealand.

The firm's offering is a portfolio of professional services rather than a software product: B2B PR (media relations, thought leadership, crisis communications, executive profiling, media training, reputation management), B2B SEO (including AI visibility services and audits, SEO content, audits, and training), B2B social media (including LinkedIn marketing services and training), content marketing, internal communications, and public affairs. The proposition is built on tightly integrated, digital-first delivery and a team of former national print and broadcast journalists and senior brand communications specialists. No proprietary software platform, patents, or in-house technology products are disclosed; the underlying technology footprint is the standard SEO/analytics/martech stack used by a B2B marketing agency.

Revenue is generated through professional-services engagements and ongoing retainer arrangements sold via direct enterprise sales; pricing is quote-based and not publicly disclosed. The firm is independently operated with no disclosed venture capital, private equity, or parent-company backing, and reported close to 100 national and international industry awards alongside a PRWeek Top 10 B2B PR Agencies ranking for 2026. No acquisitions, funding rounds, leadership changes, or material restructuring events are disclosed in the source material.

Name

TopLine Comms

Legal name

Definition

Website

https://toplinecomms.com

Company type

Private

Founded year

2008

Operating status

Operating

Headcount range

11–50 employees

Short description

TopLine Comms (DBA: Definition) is a London-based integrated B2B PR and communications agency delivering PR, SEO, AI visibility, social media, content marketing, and public affairs services to enterprise clients across technology, fintech, professional services, and industrial sectors.

Ownership category

akta.pro rank

Product category

Public Relations Services

NAICS

Public Relations Agencies (54182), Advertising Agencies (541810)

SIC

Services-Direct Mail Advertising Services (7331), Services-Management Services (8741)

akta.pro primary industry

Customer Communications Management (CCM) & Transactional Messaging (MPAAAIAL)

Keywords

• B2B public relations
• Media relations
• Content marketing
• Social media marketing
• Public affairs

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Marketing or Sales, Operations, Technology or R&D, Others

Revenue model

1. PR and Communications Services: Revenue generated through professional services engagements including B2B PR, SEO, social media management, content marketing, and related communications services. Services are delivered as integrated campaigns and ongoing retainer arrangements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

TopLine Comms (trading as Definition) is an integrated B2B PR and communications agency that combines public relations, media relations, thought leadership, crisis communications, executive profiling, and media training with specialized digital services including B2B SEO, AI visibility services, social media marketing, content marketing, internal communications, and public affairs. Engagements are delivered as integrated campaigns and ongoing retainers for B2B brands across technology, engineering, professional services, and social impact sectors.

Product overview

Definition is an integrated B2B PR agency offering a unified suite of communications services rather than a software product. The core offering combines B2B PR (media relations, thought leadership, crisis comms, executive profiling) with specialized digital services including B2B SEO, AI Visibility Services (including AI Visibility Audit), B2B Social Media, Content Marketing, Internal Communications, and Public Affairs. The agency uses a tightly integrated, digital-first approach that combines these services to deliver comprehensive growth strategies for B2B clients across technology, fintech, professional services, engineering, and other sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• B2B PR Services Public relations services specifically designed for B2B companies, covering thought leadership, media relations, crisis communications, executive profiling, media training, and reputation management. Delivered as integrated campaigns and ongoing retainers for B2B brands.
• B2B SEO Services Search engine optimization services for B2B companies, including SEO content creation, B2B SEO audits, and B2B SEO training, designed to improve organic search visibility for B2B brands.
• AI Visibility Services Services focused on helping B2B brands achieve visibility in AI-powered search results and AI platforms, complementing the agency's broader PR and SEO offering for technology-driven brand discovery.
• AI Visibility Audit Assessment service that evaluates a B2B brand's visibility and presence in AI search results, delivered as a defined engagement to inform broader AI visibility and PR strategy.
• B2B Social Media Services Social media marketing services tailored for B2B companies, including LinkedIn marketing services and B2B social media training, designed to drive engagement and follower growth for B2B brands.
• Content Marketing Content creation and marketing services to support B2B brand growth and visibility, delivered as part of the agency's integrated digital-first communications offering.
• Internal Communications Internal communications services to help organizations engage and inform their employees, including strategy, employee engagement, and change management communications.
• Public Affairs Public affairs services helping organizations engage with government bodies and public policy stakeholders, including policy communications and government relations support.

Quantifiable outcome

• TLC Live achieved 100+ ready to buy leads from schools in only four months
• +7 more outcomes

Named customers26 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators10 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Bastion: Integrated communications agency offering PR, social, content, and digital services. Overlaps with Definition on integrated B2B model and similar mid-market enterprise client profile.
• Clarity PR: European B2B technology PR agency with deep vertical focus on tech, fintech, and engineering. Highly comparable to Definition in integrated B2B PR model and mid-market enterprise client base.
• Hotwire Global: Global B2B technology PR and communications agency. Direct competitor to Definition in B2B tech PR, with overlapping services in PR, content, social media, and increasingly digital/SEO integration.
• Realwire: UK B2B press release distribution and PR services provider serving technology and B2B brands. Comparable in serving UK B2B tech clients with PR-led communications services.
• Berkeley Communications: B2B PR and integrated communications agency with a technology focus across Europe. Comparable to Definition in offering integrated PR, content, and digital services to B2B tech clients.
• CCgroup: UK-based B2B technology PR agency specializing in tech, fintech, and engineering sectors. Closely comparable to Definition on vertical focus, integrated digital-PR model, and target customer profile.
• TEAM LEWIS: International integrated marketing and communications agency with strong B2B tech, fintech, and engineering practices. Competes head-to-head with Definition for mid-market and enterprise B2B PR mandates.

Broad incumbents

• FleishmanHillard: Global top-tier PR and communications network with broad sector coverage including significant B2B technology practice. Competes for enterprise B2B PR mandates but as a much larger, diversified incumbent.
• WE Communications: Global communications agency with a strong technology and B2B focus. Overlaps with Definition on integrated PR and digital services for tech and B2B brands, but operates at significantly larger scale.

Others

• B2B Marketing (Procurement Leaders / Demandbase): UK B2B marketing media and events business serving the same B2B marketing buyer audience as Definition, though as an information/events provider rather than a direct PR services competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/@thisisdefinition
• LinkedInlinkedin.com/company/thisisdefinition
• Instagraminstagram.com/thisisdefinition
• Xx.com/toplinecomms

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about TopLine Comms