We would like to know how we would stand if someone was bitten by our dogs after climbing into a fenced area where there’s no gate?
It would depend on the height of the fence and on whether you could reasonably have anticipated that people might want to climb over it: if you have an apple tree close to the fence, for instance, it could be argued that you should have foreseen that children might be tempted on to your property. If people have regularly crossed the area to reach the pub and you have fenced it off to prevent them doing so you might expect them to attempt to continue to use the short cut, and so could be held responsible if they were bitten. If in doubt put up warning signs and keep the dogs on a chain.