Re: divorce
Ofcouse you can. Divorce within the UK is carried out in 2 stages: Decree Nisi and the Decree Absolute.
You must petition to the Courts for a divorce outlining the grounds for divorce. If the petition is undefended, it will be entered onto the special procedures list. The judge will then go through the application if he is satisfied he will declare a decree nisi in an open court.
6 weeks from the decree nisi you will be able to apply for the divorce to be made absolute. If you do not apply for the divorce to be made absolute then the respondent can do this after a period of 3 months.
Under secular law your divorce will be recognised but Islamically it may not. I have no idea how the Islamic law works but under UK law it is possible to obtain a divorce without your spouse being there.