id go amd. Id do a full system spec but i dont have time at the moment.
Get an amd dual core as they are cheap and for the price cant be beaten as i presume you wont be overclocking. if you were id get a intel 1.8ghz 2180 and overclock it to 3ghz on the stock cooler, it would be runig hot but it would be fast. Of corse leaving speed step on means taht the pc will underclock it so that it will never be running at 3ghz unless needed and therefore wont always be really hot.
For a graphics card the 2600xt would be fine, could be done with less but for the few extra pounds its probably worth it.
Mobo, pritty much any of the amd mobos if you go for amd, ocuk dont do a very good selection though.
You can get onboard with the amd one and it would be powerful enough to do 1080i if you wanted it to.