SD: I did have a look at the AW100, but I thought that the the price to accommodate a GPS wasn't worth it for me, as I wouldn't be needing it. Most of my pictures will be dry anyway, or at the very least, I'll keep my back to the sea Haha.
mvsmith: Thanks for your post. I'll certainly keep the D3100 in mind once I've finished my cadetship. Although initially I was considering the D3100, I realised it wouldn't be very practical for walking about with/quick point and shoots. But, once the 3 years have passed, no doubt I will need a new camera anyway, and then it would make sense to upgrade to something like the D3100.
Clanky: Very true

, that's why in the end I decided to go for this:
http://www.argos.co.uk/static/Product/partNumber/5620832.htm . In future I'll probably look to the D3100, but during my cadetship a small point and click is far more practical.
Cat310DL: Thanks very much for the links. Nikon do seem to make very decent cameras. I was tempted to get a Samsung because of their very reasonable prices, but so far, my parents have owned 2. The first one, although an excellent camera for the quality of the pictures, broke within a year. The second one takes quite poor pictures, considering it is a 14MP versus the first one, which was 12MP.
Once again, thank you all very much for your posts. I'll be sure to put a few snaps on here as soon as I can.
Kind Regards,
Jack.