Start by agreeing your budget, approximate date, guest list and preferred venue, then book the venue and key suppliers such as the registrar or celebrant, photographer and caterer. Check the legal requirements on GOV.UK: you usually need to give notice at your local register office at least 29 days before the ceremony, although some circumstances may require longer. Arrange invitations, outfits, rings, transport, accommodation and a payment schedule, and keep copies of important documents. Before changing your name or updating accounts after the wedding, check each organisation’s requirements, as these can vary.