What common calibres are in the UK?

[Steve]

(4 April 2015, 19:05)Mortblanc Wrote: However, when both of my grandfathers came out of the Great Depression, after going through financial collapse and feeding their families mostly on wild game for nearly 10 years, both men had shotguns in their hands and not a center fire rifle in sight.

And that, friends, is bloody good advice. As usual.