Does BT Vision slow down your internet?

NO it does not and it does use your router aswell.BT has reserved bandwidth for BT vision and you BT home hub will not slow down when running internet and video streaming.
http://uk.answers.yahoo.com/question/index?qid=20080318091802AAoXnE7

Internet speed- stupid question, but does the internet slow down much if someone is downloading a large file?

If you are in towns and cities and have fibre optics then it shouldn't change, but if me in rural UK overhead wires and no other choices then yes it does slow if someone else is downloading large ... Read More »
http://uk.answers.yahoo.com/question/index?qid=20130224040459AATtCK1

I am on ADSL as well but never had it as bad as that! Not even on a very bad day.http://www.speedtest.net/result/23228458â€¦ and I'm paying for 10 Mb/s.However any ADSL broadband is *up to 10 Mb/s ... Read More »
http://uk.answers.yahoo.com/question/index?qid=20121121092446AAJLd4w

Details Please. What is your Internet connection (DSL/Cable/Dial-up)?What speed are you paying for? What speed are you getting?
http://uk.answers.yahoo.com/question/index?qid=20090115092015AAAqc2U