There is only one explanation I can think of for today's embarrassment to the Home Secretary. Her husband has said sorry for humiliating his wife after two adult films were viewed at their home, then claimed for on expenses.
There should have been two apologies. The second should have been for the unbelievable stupidity of allowing such a claim to be be sent to the Commons Fees Office. The sum of money is a microscopic £10. The damage is gigantic.
Jacqui Smith said she "mistakenly" claimed for a TV package when billing for a web connection and would repay the cash. The receipt was shown on television. How did the receipt sent by the MP to the Fees Office fall into the hands of the press? there are a million receipts received by the Fees Office every year. Finding one as incriminating as this requires meticulous research
The likely explanation is that there is a Tory mole in the Commons leaking receipts. By an amazing coincidence all the leaks have been damaging to Labour. That suggests a political motive.
I have said previously that if the claims for London second homes are within the rules, then the rules are barmy and must be corrected. Parliament would be well advised to publish everything and avoid selective leaking for political or financial ends.