What TPIs do
A TPI obtains quotes from multiple suppliers, presents the options, and facilitates a switch. In return they take a fee — paid directly by the customer, embedded as commission in the unit rate, or both. That embedded-commission model is the source of most complaints: when commission is hidden in the rate and not disclosed, you can't tell whether the recommended tariff is the cheapest or simply the one with the fattest margin.
Ofgem's TPI Code of Practice
The Code requires registered TPIs to disclose fees, present quotes from across the market rather than a preferred shortlist, and maintain an ADR route for complaints. Registration is currently voluntary — though mandatory licensing is under active consultation. Registration sets a floor, not a ceiling, but it does mean a business has made disclosure commitments and has an accountability mechanism behind it.
What to look for
Before you sign anything, you should be able to answer three questions:
- Is the broker Ofgem registered — and what's the registration number?
- What exactly is the fee, and how is it shown on the contract?
- Are you seeing the wider market, or a preferred-supplier shortlist?
Published May 2026 · Telnergy Ltd · Ofgem registered TPI since 2002