National Gas business energy supplier profile
National Gas is the business-facing brand used by UK National Gas Ltd, a UK gas supplier with published business terms, contact details, and deemed/out-of-contract tariffs. Its terms state that deemed rates apply when a customer is supplied without a formal contract, and its published page sets out microbusiness banded daily standing charges and unit rates as well as a non-microbusiness site-specific deemed rate.
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Snapshot, in plain English
Is National Gas right for your business?
Licensed for 15 years with accounts currently filed. Sizing detail not yet independently researched, but the Companies House profile shows an established, active licensee suitable for single-site SME and mid-market multi-site contracts. Run standard counterparty due diligence before a 3-year commitment above £250k spend.
Risk band reasoning: Active, 15 years trading, accounts current.
| Your business | Fit | Why |
|---|---|---|
| Single site SME | Fit | Often competitive on single-site fixed rates. |
| Multi-site SME | Fit | Most mid-market suppliers handle multi-site billing. |
| I&C £250k to £1m spend | Possible | Check counterparty viability over a 3-year term. |
| I&C above £1m spend | Not suited | Below the scale threshold for I&C tenders. |
Quick facts
| Trading name | National Gas |
|---|---|
| Licence holder | |
| Supplies | Gas |
| Website | nationalgas.org.uk |
| Business phone | 0303 031 1200 |
| Email / contact | customerservices@nationalgas.org.ukContact page |
| Rate status | Published OOC rates |
Company data
Live data on the licence-holding companies behind National Gas, compiled by Purely Energy's independent research team and refreshed monthly.
National Gas out-of-contract and deemed rates
Published on [Deemed Tariff Rates](https://nationalgas.org.uk/deemed-tariff-rates/) as of 2026-02-13. Microbusiness deemed & OOC gas rates: Band 1 (0-24,999 kWh) £3.50/day standing charge and 15.50 p/kWh; Band 2 (25,000-49,999 kWh) £4.50/day and 12.50 p/kWh; Band 3 (50,000-73,200 kWh) £5.50/day and 12.50 p/kWh; Band 4 (73,201-124,999 kWh) £6.50/day and 12.50 p/kWh; Band 5 (125,000-293,071 kWh) £15.00/day and 12.50 p/kWh. Non-microbusiness deemed rates: site-specific pass-through 3rd party costs plus £30.00/day administration charge, and 12.50 p/kWh. All prices exclude VAT and CCL.
National Gas published rate page
If you are on deemed, default, rollover, variable, or Out-of-contract rates, ask for a written renewal quote and compare it against live market prices before agreeing a new contract.
Where your p/kWh actually goes
Indicative split for a UK I&C electricity bill in 2026, sourced from Cornwall Insight's non-commodity cost research. Your meter, region and contract type shift the exact mix, but the four components are always present.
- Wholesale energy, 38%Gas or power bought on the wholesale market. The figure most coverage focuses on.
- Non-commodity costs, 53%Network charges (DUoS, TNUoS), policy levies (RO, FiT, CfD, Capacity Market), CCL and balancing costs.
- Supplier margin, 6%What the supplier earns. Always priced into the unit rate.
- Broker margin, 3%What we earn for tendering and managing the contract. Shown separately on every Purely Energy quote.
Who National Gas may suit
Best fit for UK business and microbusiness gas supply customers that need a published deemed/OOC framework, formal business terms, and direct contact routes. The published deemed rates suggest it serves both microbusinesses and larger non-microbusiness sites, though larger sites appear to require site-specific pricing rather than a simple standard tariff.
Trading name and licence-holder notes
The legal entity is UK National Gas Ltd, but the official website and business terms present the brand as National Gas and use the abbreviation BNG in the legal terms. Historic Companies House names include The Tower Utility Ltd and HM British Natural Gas Ltd, so the licence holder appears to trade under a different brand from its registered company name.
Switching from National Gas to a fixed business contract
UK businesses can switch gas supply away from National Gas once their fixed contract ends, or after resolving any open objection or termination-window issue. The process is the same for every supplier on the non-domestic market, but a few checks done in the right order make the transfer materially faster.
- 1. Find your contract end date. It's on your last renewal letter or the most recent bill from National Gas. Most non-domestic contracts have a 1 to 6 month termination window before that date, outside of which you may auto-roll onto a new fixed term.
- 2. Get your MPRN ready. The 21-digit MPAN (electricity) and 6 to 10-digit MPRN (gas) uniquely identify each meter and are needed for any competing quote. Both appear on your bill.
- 3. Compare against the live market. National Gas publishes its out-of-contract rates online, so the gap between those and a current fixed offer is easy to quantify. Purely Energy can run your meters against the wider UK panel and come back with the cheapest fixed offers.
- 4. Settle the final bill and clear any objections. National Gas will issue a final bill within 6 weeks of supply transferring. If a balance is outstanding, they can object to the switch under industry rules, so clear it before the transfer date to avoid a hold.
- 5. Sign the new contract. Once the new supplier has your MPAN/MPRN and signed contract, the transfer typically completes within 4 to 8 weeks. There is no break in supply, you simply receive your first bill from the new supplier.
Need help with any of these steps? Our team handles the paperwork end-to-end as part of every quote.
Need help comparing National Gas?
Purely Energy can check your current rates, compare renewal options across gas suppliers, and review whether switching could reduce your business energy costs.
FAQs
Who supplies energy under the National Gas brand?+
The Ofgem non-domestic licence is held by UK NATIONAL GAS LTD., ultimately part of UK National Gas Ltd (Company No. 07314065). The trading name on your bill or contract may differ from the licence holder, which is normal and reflects how UK energy is regulated.
What is the National Gas business contact number?+
National Gas can be reached on 0303 031 1200 or by email at customerservices@nationalgas.org.uk. The official contact page is https://nationalgas.org.uk/contact-us.
Does National Gas publish out-of-contract rates?+
National Gas publishes deemed or out-of-contract rates online. Always check the latest version on the supplier's own page before relying on them, since rates can change at short notice.
Can I switch away from National Gas?+
In most cases, businesses can switch gas supply away from National Gas at the end of a fixed-term contract or after resolving any objections, debt, termination-window, or meter-data issues. The safest route is to check your contract terms, final bill position, and renewal dates before starting a transfer.
How long does it take to switch from National Gas?+
Once a new supplier has the meter point details (MPAN/MPRN) and a signed contract, a non-domestic switch typically completes within 4 to 8 weeks. Supply does not break: the new supplier takes over billing on the transfer date.
Is National Gas a UK-licensed supplier?+
Yes. National Gas is on the Ofgem non-domestic licensee register for gas. Ofgem maintains the official register at ofgem.gov.uk.
What are out-of-contract business energy rates?+
Out-of-contract rates are the prices a business pays when no fixed-term contract is in place with its supplier. They can be materially higher than negotiated contract rates, so businesses should check their contract end date and renewal window before they expire.
Other UK gas suppliers
Compare National Gas against these other UK non-domestic gas licensees on the same directory.
- BARROW SHIPPING LTD. / Fuels GasBARROW SHIPPING LTD.
- Ceres EnergyCERES ENERGY LTD.
- Crown Oil LtdCROWN OIL LTD.
- Data EnergyDATA ENERGY MANAGEMENT SERVICES LTD.
- Economy GasECONOMY GAS LTD.
- Eni Global Energy Markets (EGEM)ENI GLOBAL ENERGY MARKETS SPA
Or browse the full UK business energy supplier directory.
Sources
Public data this profile is built from. Always verify rate and contract details on the supplier's own website before relying on them.