Min, I wondered about Ms Boon's point too. I originally thought her umbrage arose because although lots of people cycle to work because it's cheap compared with driving or buying season tickets for buses, not a lot of people can claim expenses for cycling to work -- as distinct from claiming expenses for cycling while on official business, and that the taxpayer was ultimately subsidising someone to have their commuting costs paid. But I think I read it wrong, as although the article initially states he was cycling to work, it later states he was cycling around his constituency, which presumably counts as business travel. Even the dear old Metro got confused.
It would be great if we were paid for cycling to work! We'd probably all move further out. :-)