but everything relating to names of people seems to be unregulated in the UK
As an aside, one can indeed simply change one's name whenever one likes and start going by a new name, so long as it's not for fradulent purposes. One is advised to get some kind of documentary name-changing paperwork, and getting a passport etc in your new name will require that paperwork.
As an aside, one can indeed simply change one's name whenever one likes and start going by a new name, so long as it's not for fradulent purposes. One is advised to get some kind of documentary name-changing paperwork, and getting a passport etc in your new name will require that paperwork.