Small and mid-tier suppliers saw the number of switches at a record high of 206,419, which is 43 per cent of all switches.
March saw 476,528 customers switch electricity supplier, which is the highest recorded since November 2013. For the third time in less than a year the number of switches has exceeded 400,000.
Lawrence Slade, chief executive of Energy UK, said: “It’s fantastic to see customers taking advantage of the multitude of deals on offer.
“The substantial number of people shopping around and switching to new suppliers is proof of an active market. Not only are more people switching suppliers but the number of switches to small and mid-tier suppliers has hit an all-time high of 206,419, which is 43 per cent of all switches.
“If you have never switched before, you could save hundreds of pounds so join the movement and switch today!”