You need to reaply for intrance, as anyway you will have to apply to a UK city hall in advance to your marriage.

 

In order to get married, you need to give notice at the Register Office. You must have lived in the district of the town hall for seven days immediately before the notice is given. Your partner should also have lived for the same seven days at his/her address. It does not matter if either of you moves to a different address before your wedding day so long as the seven days residence requirement is established before you each give notice.

You must wait at least sixteen days after each of you has given notice before the marriage ceremony takes place. During this waiting period the notices are displayed on the Register Office Notice Board.

On the sixteenth day the Register Office issues a certificate of authority which is required for a legal marriage. You will need one certificate for the bride and one for the groom. There is no fee payable for these certificates.

Regarding a sollicitor, you can call Bishop & Sewell - Tel: 020 7631 4141. They mainly do property transactions as a lot of sollicitors, but they have different sollicitors for different matters and they might give advice for immigration.