To highlight a few
Hungerford massacre - Wikipedia, the free encyclopedia (resulting in the banning of semi-auto center fire rifles and restrictions on high capacity shotguns)
Dunblane massacre - Wikipedia, the free encyclopedia (banning of short firearms eg. All pistols and revolvers other than black powder or revolvers with a barrel legnth of 12")
Cumbria shootings - Wikipedia, the free encyclopedia (Currently firearms legeslation is under review. The NRa have been advised there will be no knee jerk reactions or bans however restrictions may be imposed)
Our current government is neither pro or anti. However the priminister who does deer stalk has advised that the actions of 1 mentaly unsound person cannot be legislated against. There is going to be a review on ownership of .22 pistol after they olympics. They are currently banned unders section 5 of the 1958 fireamrs act ammendment 1997. however the sports governing bodies are lobbying to have them reintroduced for competition use. hopfully they will be sucsessfull.
Hope the info helps