You can apply for a British citizenship in a multiple number of ways.
There are different kinds of British citizenship application form. So you should carefully read each of the forms and then decide the one that is relevant to your situation.
But, it is always better to seek the advices of a solicitor or an immigration officer before filling in your application. You can Download the British Citizenship application form, customize it according to your needs and Print.
British Citizenship application form Template is either in MS Word and Editable PDF.