Our recommendations are going to be a bit off for you. The UK is limited to 12 foot lbs of energy or has to be registered. This will cut you to around 800 fps in .177 and 600 fps in .22. Here are two that are good for hunting with the reduced power you need. Springers are fine too. They just require a bit more practice to get accurate with.
http://www.crosman.com/airguns/benjamin/397
http://www.crosman.com/airguns/rifles/co2/2260SE

Here is a good place for reviews on air rifles.
http://www.reviewcentre.com/products9.html
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