We are very happy for you to make a video recording of your wedding in our church. Weddings are a happy occasion, and many people like to have a record of the day.
There is one practical matter that you would need to address first. Some items in the church service (such as the hymns, other organ music, and the wedding liturgy) are copyright items, so you need permission from the copyright holder to make a recording.
Fortunately, this is easy to arrange. You can get a Limited Manufacture License from the Performing Rights Society, and what's more this also covers recording the reception and other events during the day.
It is your responsibility to organise the necessary licenses. You can find out more and arrange the license online on the Limited Manufacture License page of the PRS website.