Every licensed UK energy and water supplier — the full directory we tender across.
We are independent of every name on this page. Each supplier holds a UK Ofgem or Ofwat licence and is included in our standard tender process. The list is updated quarterly to reflect market changes, mergers and new entrants.
Energy — Big Six (by 2026 market share)
Octopus is now the largest UK energy supplier (≈24% market share) following its acquisition of Shell Energy. British Gas remains the largest gas supplier.
Energy — Specialist & B2B-focused suppliers
Suppliers with strong business or specialist propositions, included on every relevant tender.
Water — wholesalers and retailers
Wholesalers own the pipes (one per region). Retailers issue your business water bill and compete on price and service in the open non-household market.
Send us one bill. We'll send back every overcharge — and the cheapest legitimate replacement.
Whether you run a Mayfair restaurant group or rent a flat in Salford, the audit is the same and the fee is the same: nothing, unless we save you money.