If you're currently paying deemed or out-of-contract rates, switching to a dual fuel tariff with this supplier will certainly save you money on your business gas and electricity.
Though a new supplier does not always guarantee savings, Dual Energy's fixed and variable rate tariffs can certainly provide massive savings to smaller firms in the UK.
Once you've taken out a dual fuel contract with Dual Energy, if you find a better deal elsewhere, they may price match your energy bills. Alternatively, you may be able to switch providers free of charge. Either way, you're guaranteed to receive the cheapest business energy available.