Advertising Company

Green Triangle Ltd

Marketing communications agency helping insurance and growing UK businesses plan and scale

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TrustList summary

Green Triangle Ltd is a marketing communications agency set up by Nick Brown and Jonathan Harradine. It specialises in the global, national and London insurance markets.

The agency works with UK companies that want to grow in a sustainable way, and aims to give clients and their staff the tools to lift performance.

What Green Triangle Ltd does

Marketing and communications reviews: assessment of a business and its target markets.
Market and competitor analysis: testing growth plans against the competitive environment.
Value propositions: messages suited to the market and the client's circumstances.
Growth resource review: looking at people, finances, processes and technology.
Customer profiling: finding growth opportunities with untapped potential.

Clients

Insurance sector businesses and UK companies with a turnover above ten million pounds that have competitive strengths and room to scale.

Key facts

Founders: Nick Brown and Jonathan Harradine
Sector focus: insurance

Summary written by TrustList from the business's own published information, Oct 2026.

Categories & features

Rankings

Green Triangle Ltd is ranked on 1 TrustList ranking at #12.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. Green Triangle Ltd has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

Advertising company · 1 ranking

#12of 37
Insurance
It is the only one of the 37 here listing risk management.
Its profile: “It specialises in the global, national and London insurance markets.”
Of the 37 here, 21 also cover advertising and 15 also cover creative; 3 also work in London and 3 also work in California.
Behind David Shaul, ahead of Hey,.

As of 2026-11-01. Organic ranks only; sponsored placements are never ranks. How TrustList ranks