BT

They say we used "40gig" in a mere month, how can that be possible, when All I've done was stream a few animes, reinstall windows 7 (+updates), download Linux ISO and play minecraft??
Just doesn't make sense, we pay for 40mb speed, we get just under 1mb on a wireless connection
and the so called "fibre optic" broadband connected to our main pc receives up to 3MB, but know one uses the PC connected to the "broadband" which makes it less worth it...
and the so called broadband receives its internet through the phone switch, how on earth is that Fibre Optic?? False advertising...

I would just like to say that for me choosing BT as my ISP was a big mistake! It is not an understatement to say that I found them actually deceitful and, as a result, could not recommend then to anyone. I got less than half a meg for nearly 6 years. I complained week after week to their Indian call centres. I was so angry I finally complained to the Ombudsman who said that if I received a decent speed for a day then that warrants as conforming to BT's advertising policy - do not even bother with the ombudsman as they were not interested in my deadlock letter from BT. I was told by BT that the problem in my home was eliminated - it was with the exchange. I switched to Orange after frustration with BT re-setting the line, apologising, faults on the line, etc, etc, no compensation ....and it was like a breath of fresh air with Orange - no more problems - my speed over 6MB. Please do not choose BT FOR YOUR OWN SANITY!!!!!

basically after some 10 years with orange I decided to change to BT as my cousin recommended them to us... big mistake. been with them for less than two months and I'm still getting daily dropouts, and I am having the same problem in my student place too, seriously BT you're rubbish. They cut corners everywhere, when they put the ADSL line into my area they only did it to the box and left the old copper wire to go into the houses and they are going to do the same with the fibre optic so the old copper is still going into the houses, and because I live a mile away from the exchange the speed i receive is rubbish, barely managing 3 megs per second, which is not fun esp when I want to watch on demand TV and my mum wants to play games. it is even worse in my student place. 14 of us have to share a 5 meg connection and it is so slow that I cannot skype my friends or family. BT stop cutting corners as sooner or later you will find your customer base slipping away slowly.

I had the same problems as IanR's comments below.
JUNE
Could only get a measly 0.5mb connection for ages and the phone line was all crackly.
I called them to get the problem fixed and was threatened that I would have to pay a large sum of money if the fault was caused by me.
They then arranged engineer dates where nobody showed up. Not good when you take a day off to meet them.
Was promised that they would call me the next day to check if the problem had been resolved. No phone call/s.

NOVEMBER
Passed to a emergency department where I was treated like an idiot again with the threat of a large penalty fine.
The not so caring lady then proceeded to be as rude as possible.
Got promised a compensation payment which they never followed through with.
They also would not pay from the time I first called them. Only from the time I was passed to the emergency department which was decided by them. Oh yeah, and only if they do not fix it within 14 days of this current call.
Engineer finally comes out and makes the line worse.
More phone calls and broken promises.
Another two engineers come round and do their best to sort it out.
Finally I have a 2mb average connection which is a big difference from the 14mb my line is supposed to be able to handle. I am aware of the variables that affect speed but that is just not good enough.
My iphone 3g wireless tethered connection gives me 3mb.

December
Just called them to get my MAC code to change provider and have been informed that I can get Infinity for a couple of pounds cheaper than Total Broadband with reliable speeds of up to 15mb guaranteed or they will not supply it to me. WHY DID NOBODY SAY THIS BEFORE!
They also finally decided to compensate me for the poor service £19.72.
They now want £120 to cancel the rest of my contract.
They are trying to get me to sign into a Infinity package with a new 18 month contract which I would have to pay a bigger cancellation fee when not happy with the service.
Avoid BT like the plague if you are looking for a service provider.
Please use a speed checker if you are a current BT customer and se if you are getting what you have paid for.

Ok so I know BT have had a bit of a bad rap on here and I will preface this review by saying I was previously with Tesco and carrier pigeon would be more use than they were.

My experience with BT did not exactly get off to a flying start. They have an odd policy of not sending out your router until the day your service is supposed to start. I guess this is to make it easy if people decide to change before the service starts so they don't have a router to return. Anyway, come my activation day my router did not arrive, I was not very happy at all. I called up and they apologised and promised one would be with me the next day. Next day comes and goes without a router! So I was really mad this time and the lady on the other end of the phone was very helpful and got a new delivery sorted and also gave me a BT vision box by way of apology so Im pretty happy with that!

The router arrived as she said it would and let me tell you it is a solid piece of kit and is a cut above any router I have been issued with from previous ISP's.

In terms of speed I am getting double the speed I got with Tesco and that is at peak time. I don't seem to have any P2P traffic managment at all and I regularly get 1Mb/s + downloads on uTorrent and around 10 Mb/s on speed tests.

Generally I am very happy apart from the early hick-up with the router and my free Vision box made up for that.

I would recomend BT. Sure they are not the cheapest but you get what you pay for.