If the BBC has committed to supporting one product above others in the market place--that is, the DRM platform in Media Player--then politely inform the BBC that you will not pay your license fee until universal access is provided. Such a blatant attempt to support a commercial organization through a government programme should be most strongly resisted. Moreover, it is only when the citizens require that government truly level the playing field, rather than prop up commercial organization's poor products through forced purchases, that they have fulfilled their consumer and market protection goals.
Windows DRM = No TV Tax!
(too bad bumper stickers aren't so popular over there)
Then again, this whole tirade is easy for me to say, as I'm in the States. Nonetheless, if Bush and the other Royalists here started the same crap, I'd resist. I've done with web sites that only support IE, and I will do it every time that lazy developers and foolish, ill-informed managers make decisions that prevent all the citizens from accessing the services of the government!