Naturalisation. Good character. Criminality. Pending prosecutions
If you apply to naturalise as a British citizen, you must satisfy the good character requirement. A factor considered when assessing your character is whether you have pending prosecutions.
If you have pending prosecutions for offences committed in the UK or abroad, you must declare them in your application for citizenship. You may not satisfy the good character requirement and have your application refused, but it is still better than making false or misleading statements regarding your pending prosecutions, in which case you may be using deception, which is an additional ground of refusal.
The Home Office may anyway find out about your pending prosecutions from other sources.
If you have a pending prosecution, your application for naturalisation as a British citizen will be placed on hold until your case is decided, unless there are other grounds for refusal.
If there are other requirements not met, your application may be refused before the outcome of judicial proceedings. In such a situation, you will have to wait the end of your criminal case before submitting a new application for citizenship, provided that you are not convicted.
If you want to apply for British citizenship or for a British passport and need specialist advice, feel free to contact me. Please note that I am an accredited immigration adviser, not an employee of the UK Visas and Immigration. I charge fees for the advice provided.