When you buy any Apple laptop from Comet and Microsoft Office Home & Student Edition for Mac you get £100 deducted off the total price.
White MacBook is £686..85 with Office.
Entry level Unibody MacBook is £922.85 with Office.
Top Unibody MacBook is £1122.40 with Office.
The offer is also on the MacBook Pro, MacBook Air and the iMac.
When you click on "Go To Deal" look at the right hand side of the webpage for the deal.
Hope some of you find this useful.