Check the market for your premises
The retailer handles services such as billing and customer support; the underlying physical network is a separate consideration. Confirm what a proposed change actually covers.
| Location | Starting point | Practical action |
|---|---|---|
| England | Many non-household customers can choose their retail water services | Check supply eligibility and the current retailer |
| Scotland | Non-household retail competition has its own framework | Use Scotland on Tap to understand licensed providers |
| Wales | Retail choice is more restricted than in England | Check eligibility for the particular supply rather than assuming a right to switch |
| Northern Ireland | Different supply and charging arrangements apply | Check the current supplier’s non-domestic service guidance |
Read the existing bill before getting quotes
Gather a year of bills, actual meter readings, supply references and details of every site. Identify water, wastewater, standing and other site-related charges separately.
Check estimated readings, occupancy dates, meter details and unexplained consumption changes. Ask about possible leaks and incorrect premises information before assuming the tariff is the whole problem.
Compare a complete annual estimate
Give each eligible retailer the same consumption and site information. Ask it to identify the retail element, other charges, planned changes and the assumptions behind the estimate.
Review billing frequency, payment method, consolidated accounts, meter-reading arrangements and support. For multiple sites, easier administration can be valuable, but quantify it separately from tariff savings.
- Is the quote for water, wastewater or both?
- Which charges can vary during the contract?
- What fees apply when premises are vacated?
- How are disputed or estimated bills handled?
Review usage as well as the supplier
Take comparable readings over time and investigate unexpected overnight or non-trading use. Separate a genuine reduction in consumption from a credit correcting an earlier bill.
For equipment or water-saving work, compare purchase and maintenance cost with measured savings. Include any operational effects on cleaning, catering or production.
Keep a switching record
Confirm the start date, final reading process and closing bill arrangements. Retain the old contract, new agreement and meter evidence until the transfer is reconciled.
If you use a broker, ask which retailers it considers, what it will do after the sale and how it is paid. Do not judge a recommendation solely on its claimed saving.
Frequently asked questions
Can every UK business switch water supplier?
No. The rules differ between the UK nations and can depend on the supply.
Check eligibility for the specific premises before treating a quote as an available switching option.
Does switching change the pipes serving my premises?
A retail change normally concerns services such as billing and account management. Establish who remains responsible for the physical supply and network issues.