The Longer Fix v18

Tariff details for British Gas, including contract notes, price ranges and the supporting metadata we currently hold.

Direct debit supported Cash supported
End date
31 January 2027
Contract length
24 months
Electricity code
XLF
Gas code
YLF

Tariff overview

The Longer Fix v18 is a 24 month fixed tariff released on 16 December 2025. It is due to end around 31 January 2027. This tariff is not currently available for new switches. This type of tariff is usually aimed at customers who want price certainty for a set period, so the main things to review are the tariff end date, any exit fees, and what happens when the fixed term finishes.

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Contract snapshot

Contract length
24 months
Exit fee
£75
Smart meter
Not required or not listed
Cash payments
Supported

Price ranges by region

These summaries show the range of rates we currently hold across regions, rather than one national figure.

Electricity

Regions listed: 14

Direct debit standing charge: 35.93p to 65.00p

Direct debit unit rate: 22.01p to 24.39p

Cash standing charge: 40.34p to 71.34p

Cash unit rate: 23.19p to 25.69p

Gas

Regions listed: 14

Direct debit standing charge: 26.15p to 26.81p

Direct debit unit rate: 5.79p to 6.20p

Cash standing charge: 30.91p to 30.93p

Cash unit rate: 6.10p to 6.53p

Multi-rate electricity

Regions listed: 14

Direct debit standing charge: 37.12p to 65.95p

Direct debit day rate: 27.20p to 30.60p

Direct debit night rate: 12.43p to 13.27p

Cash day rate: 28.45p to 32.04p

Cash night rate: 13.38p to 14.22p

Terms

Terms content has not been added yet.

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