Therefore, it is a good enough idea to go on and be cautious and ensure that you have everything with you when you go for the interview at the British High Commission.
The foremost thing that you will need with you is to have the right kind of documentation that is filled in correctly and all the application forms. If anything untoward is there with these, then your file might just move to the bottom of the stack without you being given a second chance at it. Fill in the forms step by step so that you do not miss out on anything. Once you have filled them up review them and go through them so as to know exactly what you have written and to proofread and edit them.
Then you will have to complete your application form at the British High Commission. You will also have to undergo a biometric scan. Most of the time, this visa gets processed within a month. In case of an increase in the visa applicants at that point of time, it might take longer.
It is a good idea to take the help of an expert who will hand hold you and guide you all the way. There are online tools as well that allow you to take a free online assessment. This can certainly work to your benefit as you won't end up wasting time and effort. The right expert can make your application successful.