Source for a slim-fitting turtleneck sweater

[LookSharp]

Anyone know a good source for a slim-fitting turtleneck sweater in black or perhaps cream/off white. I had one that was perfect once but it got washed on a hot setting and shrunk - argh. Can't seem to find anywhere selling them on the UK high-street at the moment and it's a devil finding what I'm looking for online.

Any pointers appreciated.