I know this deal has a limited audience, but for those who's kids are off on holidays at this time (Check your local authority website) it's unbeatable deal. Generally the holiday weeks go for around £950. As a result, we can only afford to go when we book early enough and the school holidays in different areas are on different dates. In Cardiff (and many other areas too I guess) the kids are off for the two weeks until the 23rd April 2012, so I've just booked.
You only need to pay a deposit of around £100 and the rest a few weeks before you go.
Hope this helps someone grab a cheap holiday.