Swanbridge is a mostly rocky beach at the end of a narrow lane (Beach Road) from the B4267. A popular seafront pub (The Captain's Wife) has plenty of outdoor seating and a car park which doubles as a car park for the beach. About 450 yards offshore, Sully Island can be reached via a causeway for approximately three hours either side of low tide. Signs warn that crossing can be dangerous and there have been drownings, so if you do make the trip across be sure you know the state of the tide and allow ample time for your return. Other facilities at the beach include a restaurant and a small snack bar.
The photo below shows the beach with Sully Island to the right. Out to sea are the islands of Flat Holm (left) and Steep Holm (right). Between them is the headland of Brean Down in Somerset.