Last July/August the student promo in the UK was buy a mac + any ipod and get £100 rebate.
Myself I couldn't wait for the offer this year so i bought a macbook last week. If you can wait for a month or so then you'll be saving around £100.
By the way, does anyone know when the Apple Store at the Arndale Centre in Manchester is opening (it must be sometime soon)? what offers do they normally have when opening a new store?