Get £50 cashback when you transfer your energy with Castle Water.
Save £££s on your energy bill.


Cut costs with lower business energy prices.

Snap up our competitive electricity and gas prices.

How much could you save? Get a quote today!

Why switch Gas and Electricity with Castle Water

You buy your water from us. We already provide one service, which makes it more efficient to add other utilities to your account.

Buying all your utilities together can generate greater business savings. Castle Water is an efficient, low cost yet high service supplier of water. We drive down costs so that we can pass savings on to you. We supply hundreds of thousands of business water customers in London and southern England. Now we can bundle your water supply with gas and electric.

Contact us today

T&Cs: Energy cashback is a limited offer to celebrate the launch of our energy sales service. It is only available until 31 March 2019. Cashback is payable once your energy contract commences. We reserve the right to close this offer prior to 31 March 2019.


    Reduced rates and improved services.

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    Switching is easy. Just follow these easy steps.

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    Learn more about your payment options.

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