Sealy Beds Sally Trousdale August 30, 2017 Beds Sealy offers a range of quality and luxurious beds and mattresses, king size mattress, super kingbeds which are all available throughout the UK. Sealy have a very simple mission: to help all our customers become Deeper Sleepers. And it’s so much more than just a hollow philosophy or something we hang on the walls. We have an extensive range that will suit your comfort levels, preferences and budget. Visit Browns York first floor furniture department.