The linked article states that "The gun crime figures, which were obtained by the Tories from official Parliamentary answers..." I think that means the answers came out of a parliamentary debate. Which means the figures could be warped by political motivations.
The official statistics on crime in Britain in the past 10 years can be found here. They largely mirror the information about firearms use in crime I gave you in the earlier post.
America has a culture of violence that is due to many factors. Gun control by itself will not change that culture. But less permissive and reasonable laws which can be enforced, could be part of the solution. Unfortunately, I don't think it's ever likely to change because there is too much money at stake and the system is too corrupted by it.