Britain also took the majority of guns away in 1920, due to civil unrest after WW1 which culminated with the General Strike in 1926, which incidentally led to other changes, which began post WW2 (Socialized Health/Council Housing, Etc.) which the US has still not addressed of course
"The Firearms Act 1920 was partly spurred by fears of a possible surge in crime from the large number of firearms available following World War I and also fears of working-class unrest in this period. "An Act to amend the law relating to firearms and other weapons and ammunition", its main stated aim was to enable the government to control the overseas arms trade and so fulfill its commitment to the 1919 Paris Arms Convention. The ongoing Anglo-Irish War may also have been a factor, as Britain and Ireland were at that time still in union with each other, and the Act also applied to Ireland. It required anyone wanting to purchase or possess a firearm or ammunition to obtain a firearm certificate. The certificate, which lasted for three years, specified not only the firearm but also the amount of ammunition the holder could buy or possess. Local chief constables decided who could obtain a certificate and had the power to exclude anyone of "intemperate habits" or "unsound mind", or anyone considered "for any reason unfitted to be trusted with firearms". Applicants for certificates also had to convince the police that they had a good reason for needing a certificate. The law did not affect smooth-bore guns, which were available for purchase without any form of paperwork. The penalty for violating the Act was a fine of up to 50 or "imprisonment with or without hard labour for a term not exceeding three months", or both.
The right of individuals to bear arms had previously been, in the words of the 1689 Bill of Rights, "as allowed by law". The 1920 Act made this right conditional upon the Home Secretary and the police. A series of classified Home Office directives defined for the benefit of chief constables what constituted good reason to grant a certificate. They originally included self-defence.
As the 1920 Act did not prevent criminals from obtaining firearms illegally, in 1933 the Firearms and Imitation Firearms (Criminal Use) Bill was submitted to Parliament. It increased the punishment for the use of a gun in the commission of a crime and made it an offence punishable by up to 14 years' imprisonment for anyone to "attempt to make use" of any firearm or imitation firearm to resist arrest. Possession of a real or imitation firearm was also made an offence unless the possessor could show he had it for "a lawful object.
Lived in the UK for many years(married to a Brit). On the main, the UK doesn't have the underlying social conditions which triggers the events in the US, but there is still lots of violence, knife attacks in cities are rife.
I would say an apple and oranges situation.