When will you reopen? We are delighted to confirm that all our Merlin London attractions will reopen on Saturday August 1st. Related articles Do I need to wear a face covering/facemask? What if I am running late for my time slot? When is SEA LIFE London Aquarium Open? What do I do if one of my family is ill at the last minute? Do you have a Visit England "We're Good to Go" industry charter mark?