Approval of a range is no longer by MOD. You can shoot on a range that has adequate insurance cover. Insurers generally insist inspection by an NRA inspector though most will accept previous MOD approval.
Te occasional use is an interesting one. I have seen mention of people having antiques and being allowed to fire a few shots even mentioned in Hansard reports but can't find it in any of the firearms acts or ammendments. Some have approach FLO's who have said categorically no way.
“If a cricketer, for instance, suddenly decided to go into a school and batter a lot of people to death with a cricket bat, which he could do very easily, I mean, are you going to ban cricket bats?” :- Prince Philip said after Dunblane