Don't be alarmed if you hear John Terry tell you to mind the gap or Arsene Wenger inform you when the next train will be arriving this week.
Stations in close proximity to various football grounds in the capital will use the voices of popular figures at the club.
Wenger's voice will be used alongside that of Mikel Arteta at Arsenal, Holloway Road and Finsbury Park. Meanwhile Terry will be heard delivering information to commuters and tourists at the stations nearest Stamford Bridge including Fulham Broadway, Earl's Court and West Brompton.
Tottenham will be represented by Andros Townsend and Ben Davies whilst Joey Barton and Rob Green will do the honours for QPR. Fulham captain Scott Parker will be heard at Putney Bridge and Parsons Green.
Also lending their voice to the Tube for the day is ex-Paralympic gold medalist Baroness Tanni Grey-Thompson and a handful of celebrities.
London Poppy Day is part of the Royal British Legion's annual appeal and takes place this Thursday.
Where can you hear them?
Arsene Wenger and Mikel Arteta - Arsenal, Holloway Road, Finsbury Park
John Terry - Fulham Broadway, Earl's Court, West Brompton
Andros Townsend and Ben Davies - Seven Sisters, Tottenham Hale, Tottenham Court Road
Joey Barton and Rob Green - White City, Wood Lane, Shepherd's Bush Market
Scott Parker and Dan Burn - Putney Bridge, Parson's Green
Baroness Tanni Grey-Thompson - London Bridge, Angel, IslingtonReuse content