Do I have to switch everything to UW?
No. You can take UW energy on its own on the Variable tariff. The bigger discounts need at least one or two other services, such as broadband or a SIM. Two SIMs count as two services.
Evidence
UW's Variable tariff needs no other services. MoneySavingExpert notes that UW's broadband contract runs for 18 months, so it can outlast a 12-month energy fix by six months — worth knowing before you choose.
Sources
Last reviewed 22 October 2026
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