THE largest indoor water park in the UK boasts balmy weather all year long, record-breaking slides and has been described as the "best family activity". Brits heading to Blackpool for a seaside getaway this summer might find themselves forced indoors by the unpredictable British weather. 5 Sandcastle Waterpark in Blackpool has been labelled the 'best family activity' Credit: Sandcastle 5 The waterpark is home to the UK's longest indoor water rollercoaster Credit: Sandcastle 5 There are a total of 18 slides and rides some of which are record-breaking Credit: Sandcastle 5 The waterpark has an indoor half-pipe waterslide and attractions for younger kids Credit: Sandcastle But right by the beach is the perfect solution to a rainy day, with Sandcastle Water Park home to 18 different slides and rides, and kept a warm 28C all year round.

Among its attractions is the UK's longest indoor water rollercoaster, Master Blaster, which the park's website boasts has "more than 200m of adrenalin filled excitement". The Master Blaster is just one of several slides at the park described as "white knuckle" with others including sidewinder, the world’s first indoor half-pipe waterslide . There's also Montazooma, a high-speed ride with hairpin bends and 360 degree helixes on the way from top to bottom.

Read More on Waterparks SPLASH OUT Top UK holiday parks with waterparks, huge pools & cheap stays from £5pp a night PARK LIFE Award-winning English resort has its own waterpark, heated pools and .