It comes as weather forecasters are predicting a mini-heatwave, with temperatures set to hit 23C in in some areas on Saturday, while highs of between 21C and 25C are expected by Monday.
On Saturday, London is expected to see highs of 23C, while on Sunday Manchester and Liverpool could be basking in 24C.
The pleasant weather marks a welcome break from the rain that has dominated the UK since the start of the month.
It is also the first public holiday since Covid rules on indoor hospitality were lifted.
Met Office forecaster Matthew Box said: “It’s obviously a welcome change I think for many.
“Given that we have had a reasonably cold and then a wet couple of months through spring, with April being cold and May being wet and cloudy and generally on the cool side too, we’ve got a sunny end to May.
“It might catch a few people out given that we haven’t seen much sun and UV levels are going to be quite high over the weekend as well so that’s something to be aware of.”
Ben Aldous, from the RAC, said: “Our research points to Saturday and Monday being the busiest days, but in reality there’s a good chance the weather will have the final say as to how busy the roads get.
“A return to more typical late May temperatures and an end to the recent wind and rain could spark a sudden surge in journeys and mean some routes – especially those to the coasts and hills – start to clog up.”
Meanwhile, the Rail Delivery Group said National Rail had reached roughly 40 per cent of normal passenger numbers over the last few weeks, compared to under 10 per cent during May last year.
Stations affected by improvement work this bank holiday include London King’s Cross, London St Pancras International, London Victoria and the West Coast Main Line.
Additional reporting by the Press Association.