Sounds a bit like a conspiracy theory. I maybe not that good in British politics, but googling reveals that the bill's text was prepared by a committee involving members of Conservative, Labour, LibDem, and Scottish National Party. The UK parliament's website is an ugly mess, so I couldn't find voting stats, but there are claims in media that it garnered cross-party support. Also it's hard to buy "pro-business ideology" in this particular case when Facebook is against the bill. Bureacracy is by nature always tries to extend its power, I guess that's what happening here.