Syon Park wedding photos. Cat and Dom were married at St.Marys, a beautiful and historic church in Wandsworth on the banks of the river Thames and celebrated their wedding at Syon Park, the London estate of the Duke of Northumberland. Two amazing venues and beautiful weather, what more could you ask for? Well, a very happy couple beats those hands down! Cat and Dom were brilliant, determined to enjoy the day. Syon Park is a stunning venue with so much to offer indoors and out, the incredible long gallery to the beautiful glass house, it is a joy to be involved as with Syon Park wedding photography.