You’ll be lucky – ebuyer’s cheapest laptop with an IPS screen & solid state hard drive is over £720.
http://www.ebuyer.com/543337-lenovo-ideapad-yoga-11s-laptop-59367205
If you must have a touch screen, then take a look at these from ebuyer, but ebuyer are not necessarily the cheapest (normally their prices are pretty good – with free shipping).
http://www.ebuyer.com/store/Computer/cat/Laptops?sort=price+ascending&72=Yes&;page=1
If you could live without a touch screen – almost any modern laptop can handle music, photos, video and applications that you will need for a degree course.