Im not from the UK but Ive had them on my computer too from surfing the web. I had a couple that were also in the form of a trojan toolbar. Whatchout for those toolbars!!!!

I got zapped by a nasty 1-800 trojan on the web and it was a bitch to remove, even with an adware program.

Just wanted to let you know as I dont think its just limited to the UK. I feel more safer using P2P than surfing the web these days.

You can get dialers from browser hijackings.