Should I use a mortgage broker?

Last reviewed 8 July 2026 · Compare Mortgage Rates editorial team

This guide looks at the topic through a rate-comparison lens, with emphasis on total cost, eligibility and lender criteria rather than headline rates alone.

For most UK borrowers, a broker is worth it — particularly if your case is anything other than vanilla employed with a clean credit file.

What a broker actually does

Reviews your finances and explains realistic options.
Compares lender criteria, not just headline rates.
Gets an Agreement in Principle from the right lender.
Packages your application and chases the lender.
Handles queries from underwriting.

Whole-of-market vs panel

A whole-of-market broker can recommend from any UK lender. A panel-only broker is restricted to a list. For complex cases, whole-of-market matters.

How brokers are paid

Lender commission — paid by the lender, doesn’t come off your loan.
Client fee — flat fee (typically £300–£999) or a percentage.
Both — most common model.

When to skip the broker

If you’re doing a simple product transfer with your existing lender and the rate is acceptable, you can usually do it online in 15 minutes.

Frequently asked questions

Does using a mortgage broker guarantee approval? +

No. A broker can help assess suitable lenders and package an application, but approval remains subject to lender criteria, affordability, credit checks, and valuation.

Do mortgage brokers charge fees? +

Some brokers charge a client fee, some are paid by the lender, and some use both methods. Any adviser fee should be explained before you decide whether to proceed.