Right, have had a quick look and found you some links:
This is pretty cheap and would do the job. However, the processor is a little underpowered. It also does not come with an Office license, so you'd have to pay out a bit extra on top for that, or start using OpenOffice instead, which looks very much like Microsoft Office, but is free.
This one is a bit more expensive and has a more powerful processor, as well as more RAM. As a result, it'll be faster. Again, no MS Office though.
If you would prefer a physical store, much as I personally dislike PC World, I quite like the look of this offer on their website. That has a decent processor and 4GB RAM, which will easily be sufficient for your needs, and a good size of hard drive for all your stuff. Again with the Office issue - it comes with Office Starter, which is limited-functionality Word and Excel, with advertising, and you can pay to upgrade it to a full Office copy. This is fairly standard so you'll probably run into that wherever you buy.
I hope that helps a little - I know that's only three links and there are many, many suitable laptops out there, but in your shoes I'd be looking at the kind of specifications you'll see on those links, so that might help you know what to look for. dabs.com (which I linked to above) and Ebuyer are two websites I've bought pc-related stuff from in the past and they delivered quickly and with good service. You could also look online at Dell, they tend to be quite cheap. For physical stores, just go to whichever of the big chains has the best offer on, the service is generally terrible wherever you go so you can't lose there :o I tend to find PC World and the like horribly overpriced though so it even if you spot something there you like, do look it up online to see if it's cheaper elsewhere.