Hi Kate :)
Chris has been doing some research on the Canon SX230HS (he has been thinking about this one for me) is getting very good reviews and it won the best superzoom camera in TIPA 2011.
It has GPS on it and if you don't want it then the SX220HS will be cheaper as it doesn't have the GPS.
There are a couple of moans and these are that the pop up flash pops up everytime you turn the camera on and it is not particularly strong. It uses the batteries very quickly if you keep the GPS turned on.
It's £250 at Amazon and the SX220HS is £206.
If you want to spend more money then there are bigger cameras you could go for.
Here are some photos showing you the difference in the zoom:
Full 14x zoom
It has a good HD movie function as well. There is also a you tube video here