are there any unilingual anglophone Canadian MPs?
Tons. Probably two-thirds of non-Quebecois parliamentarians. It would be more interesting if there were any uniligual francophone MPs (probably not).
This recent parliamentary study said that there were a few (well, at least 1 of the 5 2004 Bloc incumbents that decided to answer it said he was unilingual francophone and that's the only thing I can say definitively) - but only about 10-25% of the 2004 Quebec candidates considered themselves unilingual. The number varied by party - with Quebec Liberals most likely to be unilingual, followed by the Quebec Conservatives, Greens, Bloc and Dippers.