Dont know if any of you have heard of this, and sorry if its a repost, but this seems quite well priced for what it is...
i might get one, shame its so ugly though... thats the only thing holding me back at the moment.
http://www.gpsinforad.co.uk/
£79.99 is pretty cheap for a speed camera detector and usb gps reciever.
and you dont have to use the cigerette lighter power if its on the usb.
i think it would be quite cool to have dedicated hardware speed camera detection without having to pay road angel prices...