The former 400m runner held a session at London Bridge yesterday as part of Transport for London’s (TfL) Get Ahead of the Games campaign. Today he is at King’s Cross until 11am, and tomorrow will be at Liverpool Street Station from 9am to 11am.

On a normal day, 12million passenger journeys are made on London’s transport network. During the Games up to three million extra passenger journeys are expected on the busiest days, and commuters are being advised that stations including King’s Cross, Liverpool Street and London Bridge will be among the busiest on the network.

Thomas said: “My warm-up exercises are designed to motivate commuters to seek alternative forms of transport, such as walking or cycling, to avoid hotspots.

“Millions of extra people will be arriving in London over the next few weeks and everyone in London during the Games should be able to enjoy what will be an amazing summer.

“By planning journeys to avoid peak times and hotspot stations, commuters will ensure that they can still travel around London and enjoy the once in a lifetime experience of living and working in a host city.”

In the final weeks before the Games begin, several million London commuters will be emailed localised travel advice for the areas where they live and work.

Around a million Get Ahead of the Games Oyster card wallets will be handed out at zone 1 stations this week, and by the end of the Games, six million walking maps, which if put together would stretch to the moon and back almost ten times, will have been handed out to commuters and visitors.

During the Games there will be 215,000 magenta signs at or near stations to guide spectators to their Games events, and around 3,500 TfL Travel Ambassadors, wearing magenta coloured tabards, will provide the travelling public with live, up-to-the-minute travel advice at Tube, bus, rail and DLR stations across London.