This looks like a chance to wave the flag for Zen Internet, who are great :D

They don't do any bandwidth shaping or restriction like that, have great service, and you can cancel with a month's notice.

I'm on the £25-a-month package which has a 25gig monthly download-limit, soon to be upped to 50gig; you can pay for extra if you need it, so that's not really an issue.

Zenzenzen :D