First Utility cashback and voucher savings

First Utility is the largest independent energy supplier in the UK. Why Pay More? Switch to First Utility and save £166

  • Trusted by one million customers in the UK
  • Fast, simple switching within two and a half weeks
  • First energy supplier to be recommended by Good Housekeeping readers
  • Rated ‘great’ on Trust Pilot with reviews from more than 13,000 customers
  • Number one energy supplier for customer service ratings according to consumer service ‘A Spokesman Said’.
  • Access to an easy-to-use app for on-the-go control


*Customers who registered at to one of our one year fixed term tariffs between 1 October and 31 December 2016 saved an average of £166 when compared to the average Big Six Standard Variable Tariff at the average energy usage for a medium household.

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First Utility Voucher Codes

We don’t have any First Utility codes available at the moment. See: All codes and deals | Expired codes
Terms & Conditions and other useful information
  • What will stop me getting cashback?
    • If you already have an account with First Utility and wish to switch your current tariff e.g. changing iSave Everyday to a Fixed rate tariff or vice versa, you will not be eligible for any cashback under this offer.
    • Using a promotional/voucher code not posted and approved by TopCashback.
  • What else is essential?
    • Please make note of your Customer Registration ID when completing your application. This is required in the unlikely event that you need to submit a missing cashback claim
    • This offer cannot be used in conjunction with any other offers.
    • Any fraudulent activity will result in immediate termination of your account.
    • This offer is not applicable to any customers who already have a pending application to join/switch their supply to First Utility where they have not used the TopCashback link.
    • In certain instances transactions may not be tracked, or will be declined, due to factors outside of our control. Cashback may only be paid on the net value excluding any taxes, surcharges and any additional costs such as delivery.
  • Good to know
    • Cashback is paid by TopCashback only.
    • Cashback is only available to new First Utility customers. The amount of cashback will depend on whether you choose a single fuel or dual fuel product and the terms of the offer.
    • Cashback will be confirmed and paid on a single fuel application once the electricity supply has started and for a dual fuel application once both electricity and gas supplies have started.
    • From time to time information displayed here may be out of date.
    • Cashback rates are subject to change both up and down.
    • Recurrences on the amount of purchases that can be made while earning cashback may be limited.
    • This offer is open to First Utility residential customers only. No cashback is offered on First Utility business products.
    • First Utility cashback can be earned simply by clicking through to the merchant and shopping as normal.
    • First Utility Cashback is available through TopCashback on genuine, tracked transactions completed immediately and wholly online.
    • If you earn cashback through this merchant, payouts cannot be made by M&S e-Gift Card,British Airways Executive Club,Avios Travel Rewards Programme,Love2Shop,PayPal,M&S e-Gift Card,British Airways Executive Club,Avios Travel Rewards Programme,Love2Shop,PayPal,Debenhams e-Gift Card ,Ticketmaster e-Gift Card ,Evans Cycles e-Gift Card,Pizza Express e-Gift Card , e-Gift Card,Nike e-Gift Card,Halfords e-Gift Card,Costa e-Gift Card,The Entertainer e-Gift Card ,Reward Wallet,Primark e-Gift card,Google Play e-Gift card,The Dining Out Card e-Gift card,The Great British Pub e-Gift card,Chef & Brewer Pub e-Gift card,Fayre & Square Pub e-Gift Card,Flaming Grill Pub e-Gift card,Hungry Horse Pub e-Gift card,Greene King Pubs e-Gift card,Harvester Pubs e-Gift card,All Bar One e-Gift card,Miller & Carter Steakhouse e-Gift card,Vintage Inns e-Gift card,Toby Carvery e-Gift card,Starbucks e-Gift Card ,Zeek e-Gift Card,Prezzo e-Gift Card,Arcadia e-Gift Card ,FatFace eGift Card,The Restaurant Card e-Gift Card .
  • What to do when
    • For any cashback claims please contact TopCashback.
    • The vast majority of transactions from merchants track successfully, occasionally a transaction may not get reported. If you believe this to be the case, please submit a "Missing Cashback" query within 100 days of the transaction, we will be unable to chase up claims older than this.
    • Some merchants may not be forthcoming with untracked cashback. We endeavour to chase untracked cashback but reserve the right to halt enquiries at any time. Please do not make purchase decisions based upon expected cashback as it is not guaranteed.

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Tracking Stats


Based on over 33,000 completed transactions
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