From the official website:
>> The Home Office will retain the information it gets from test centres for a reasonable period. However, you should submit your application as soon as possible after taking the test.
In other words, Home Office states they will keep the test results for a reasonable period so taking it too early may cause problems. Does anyone know how long this “reasonable period” is? For example, I can only apply for the citizenship at the beginnin of Sept. I am wondering how early I can take the test in order to keep the result valid for the Home office for my Sept. application. I am thinking to take it the end of May or early June. I don't know whether this is too early? Any suggestion will be highly appreciated.