Joytech are doing a (time-limited) offer @ £49.99 delivered
http://www.joytechstore.net/Control-..._154-1880.html
What it is:
Possibly the most feature-rich sub-£100 component switcher, it has a dedicated XBOX360 connection, 4 component inputs, 5 composite and 5 S-Video, with 4 optical and 5 stereo audio connections... AND a 5 port 10/100 Ethernet hub. Remote-controlled, with a customizable, backlit LCD display. Lots of good reviews, but see below.
Wii owners note: I've read reports of some Wii owners having problems with some component switchers, this being one of them. I'd check the forums / google first.
hth