Weddings/Civil Partnerships – Monmouthshire www.monmouthshire.gov.uk/things-to-do/weddings 3 Jul 2017 – Getting married or forming your civil partnership in Monmouthshire. The first decision to be made when planning your wedding or civil partnership is where you would like to hold your ceremony. You can choose from: the register office in Usk. one of our approved venues. or a church or registered building.