That`s what they said I should have done. The more I look at the pics of bolt action air rifles, the more i`m convinced this isn`t one. They all seem to have a second "barrel" underneath the main barrel
https://www.google.co.uk/search?hl=e...rifle&tbm=isch
presumably this is where the compressed air would be stored.
There was one exception, the Brocock Predator, which is banned in the UK.
The closest i`ve found that looks like the rifle in the pics I posted is this one.
Sporting Rifle M70 American Style | Zastava-arms