The cost of energy changes frequently and different suppliers charge different amounts. Normally your current supplier may able to switch you to a cheaper tariff or you would be able to look at a cheaper provider. However due to surging prices most suppliers are unable to offer anything more competitive than price cap, which means there is little incentive to change suppliers just now.
There may be other ways that you can save money on your gas and electricity bills without changing supplier. The Energy Action Scotland website can provide Energy Advice and tips on changes you can make around the home from that can make it more energy efficient and save you money.