When I first joined talk talk I thought their service was ok, but soon noticed the speeds were often very slow, slower than with my previous ISP. So I complained, but was assured I had the fastest speed my line would carry because a lot of new subscribers were using the exchange, this sounded plausible so I let it go.
Three months later I started getting problems with broadband, dropouts for seconds minutes even full days on two occasions. Talk Talk blamed my equipment, so I replaced filters then modem/rounter, they made excuse after excuse but did not fix it. The problems magicaly disapeared when I changed to another ISP, and my speed almost doubled.
In rating below I give rating of 1, only because zero wasn't available!