If your company/employer is setup with the home use scheme then you can get the big daddy version of MS Office 2010 for £8.95. I know it won't be applicable to everyone, frankly the £50 from Software for students is still brilliant value, but if you can get in on this then you'd be a fool not to.
There are some T&Cs attached to it, like apparently your license becomes invalid if you leave the company you got it under. That said I've never heard of them rejecting a key for this reason.
For some reason goto deal isn't directing properly, I think this link should work:http://www.microsofthup.com/hupuk/default.aspx?culture=en-GB