Amazon have today launched the Kindle Touch in the UK, with devices due to ship on 27th April. The price is £109 for the WiFi model; £169 for 3G.
Links:
Kindle Touch:
http://www.amazon.co.uk/gp/product/B005890FUI
Kindle Touch 3G:
http://www.amazon.co.uk/gp/product/B005890FOO
I've not looked, but I would imagine it will also be launched in the other "national" Amazon stores, too.