If you haven't made any plans yet, you may well find that a lot of hotels and other accommodation are booked up. This is the spring bank holiday, and often is even busier than the May Day holiday, as it's the last public one until late August.
If you don't have anywhere special you want to go, this holiday could be a good one for staying at home. For one thing, the roads are expected to be very crowded, and of course all the resorts etc will be the same. For another, the weather forecast for many parts of the UK isn't very good - very heavy rain is expected, with even the possibility of flooding in some areas.
You will probably find large numbers of people are heading for garden centres, DIY stores etc to catch up on some jobs rather than going out much - so if that's what you decide to do, it's a good idea to start early and avoid the traffic.