One slight correction on airguns. If the energy of the fired pellet is below 12 ft/lb there is no license needed. If the energy is greater than or equal to 12 ft/lb a firearms acquisition certificate (FAC) is required, which is the same license needed for a rimfire or centerfire rifle. Suppressors should be bought at the same time and added to the FAC. It is considered poor form to shoot unsuppressed guns thus disturbing the quality of the idyllic countryside, or the poor scotsman trying to enjoy his dram.
You are correct, my apologies.
And I am an airgun owner, lol. Pistol and rifle. Although mine are pretty standard .177, .22’s, that dont require an FAC.