Low-angle shot of 20 Fenchurch Street

EMPOWERED

EXPERTISE

We empower our people to protect customers
against complex and ever-changing risks

Customers in over 170 countries
200 coverholders globally

Recognised for Outstanding Claims and Underwriting Services

We are one of only two London Market insurers to have been awarded the Service Quality Marque by independent research firm Gracechurch, which reflect exceptional service levels, for both Underwriting and Claims in 2026.

Our leading Claims team has now been awarded the Service Quality Marque for ten consecutive years and topped the rankings for both expertise and relationships in the latest survey. 

 

 



In Underwriting, brokers consistently cite speed and availability as TMK's standout strengths. TMK's underwriters are also recognised for being easy to deal with, further cementing our reputation for delivering exceptional service and fostering strong broker relationships.

Find out more here.                                                                                                                      

OUR FORMULA FOR SUCCESSFUL FUTURES

We have a formula for our culture at TMK. It brings together an unexpected blend of characteristics that make the experience of working here unique. 

Like art and science, IQ and EQ, tradition and innovation, our formula is how we balance seemingly conflicting ideas – and is the catalyst for our success.

PEOPLE FINDER

LATEST NEWS

 

 

LATEST INSIGHTS

50 years in flight: leading the future of aviation insurance

50 years in flight: leading the future of aviation insurance

By Matthew Shaw, Chief Executive Officer

28 April 2026

TMK's aviation practice was founded in 1976, the same year Concorde completed its first commercial flight. The world's fastest passenger aircraft, capable of crossing the Atlantic in under three and a half hours, felt like a glimpse of where aviation was headed. Fifty years on, Concorde is long retired, and the aircraft most of us board today would be broadly recognisable to an underwriter from that era, even if almost everything underneath the surface has changed. The same, in many ways, could be said of the aviation insurance market.

Homegrown hackers

Homegrown hackers

By Luke Fardell, Lead Cyber Analyst

12 February 2026

Last year, the National Crime Agency arrested four suspects in connection with cyber-attacks on Marks & Spencer, Co-op, and Harrods. What made these arrests noteworthy wasn’t just the high-profile nature of the victims, but the fact that the suspects are UK nationals. This highlighted a shift in the cyber risk landscape which organisations cannot afford to ignore.

Unblurring the lines between cyber, technology and IP risks

Unblurring the lines between cyber, technology and IP risks

By Thomas McShane, Head of Technology and Media E&O

20 January 2026

Technology companies underpin the daily operations of businesses around the world. They provide the pipes that allow commerce to flow. This global infrastructure is under increasing attack from cybercriminals. Change Healthcare, CDK Global, SolarWinds. The list of third-party technology providers which have been the victims of cyber breaches continues to grow.

FEATURED SERVICES

A guide to our products and services

Unmanned Aerial Systems digital product