MPs have declared more than £13,500 worth of Wimbledon 2014 tickets and hospitality. Among the beneficiaries were Labour's Deputy Leader Harriet Harman, Conservative, Mark Field, Shadow Sports Minister, Clive Efford and House of Commons speaker, John Bercow.
Organisations that donated seats in the prestigious Royal Box included the Lawn Tennis Association (LTA) and the All England Club. A major tobacco company also offered tickets to the men's final between Roger Federer and Novak Djokovic.
On two separate occasions John Bercow was given seats in the Royal Box which had a total value of £6,210. Harriet Harman received two tickets from the All England Club to the Royal Box and lunch valued at £3,5590.
Bob Crow, general secretary of the RMT transport union, said:
"While this report reinforces once again that our railways are nothing more than a multi-billion pound rip-off lining the pockets of a bunch of spivs and speculators, it ducks the real issue and that's the cast-iron case for public ownership.
"You can't have transparency, accountability and value for money while our railways are bust apart and run as a money-making racket for a gang of private operators."
Transport Select Committee Chairman Louise Ellman MP: "The Government should rule out continuing to use pricing to take people off the railways at peak times."
A group of MPs has urged the government not to increase train fares even further for those travelling at the height of the rush hour.
The government's currently considering plans to increase fares during peak hours, in a bid to pursuade passengers to travel at quieter times.
But the Commons Transport Select Committee says that would effectively be a tax on commuters.