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UK Mid-Contract Price Rises: How to Avoid Them in 2027

Mid-contract price rises are still common in UK mobile. Since January 2025, new contracts must state them in pounds and pence. Here is what that means and how to avoid a nasty surprise.

Earns It6 min read · By HypeGale Content Team

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UK Mid-Contract Price Rises: How to Avoid Them in 2027 feature

Short answer: Mid-contract price rises are still common in UK mobile, but the rules changed. Ofcom says that from 17 January 2025, providers can no longer put inflation-linked or percentage-based price-rise terms into new phone, broadband and pay-TV contracts. Any scheduled increase must be stated up front in pounds and pence. Older contracts can still carry the old "inflation plus a percentage" clause, so what you face depends on when you signed.

Before the change, a chunk of UK mobile customers got a bill increase every spring that they hadn't consciously agreed to. It was baked into the contract from day one, just not somewhere most people read closely. The new rules make rises more predictable, but they don't make them disappear.

What's Actually Real Here

The rule change is genuine. Ofcom's announcement says the rules cover phone, broadband and pay-TV services. Providers must state price rises "in pounds and pence, prominently and transparently, at the point of sale" and be clear about when they take effect. The ban was not retrospective: Ofcom's consumer guidance says contracts signed before 17 January 2025 may still contain inflation-linked or percentage-based rises.

Legacy clauses are still biting. When Three UK moved to fixed pounds-and-pence rises from 1 April 2026 (£1.80 a month on low-usage plans, £1.90 on mid-usage and £2.30 on high-usage, according to ISPreview), customers who joined or upgraded between 1 November 2022 and 7 September 2024 and were still within their minimum term kept the old formula: CPI of 3.4% plus 3.9%, a total of 7.3%.

You have exit rights in some cases. Under Ofcom's rules, providers must give you at least 30 days' notice before a price rise takes effect, and you then have 30 days to leave penalty-free if the rise wasn't specified in your contract or exceeds what it said. You can move to a new contract with the same provider or switch to a competitor without exit fees.

The flip side matters: if a pounds-and-pence rise was clearly set out when you signed, that is the deal you agreed to, and Ofcom's guidance says the provider can apply it without offering an exit. Check your contract, then check Ofcom's rights page before you cancel.

Some providers skip mid-contract rises. iD Mobile said in January 2026, according to ISPreview, that its SIM-only plans in 1-month, 12-month and 24-month terms carry no annual price rises. That's one example, not an endorsement, and terms change, so verify the current offer.

Where the Hype Outruns the Reality

"Fixed in pounds and pence" is not the same as "cheap" or "no rise". A fixed rise is far more predictable than an inflation-linked one, but the percentage still matters. As simple arithmetic, a £1.50 monthly rise is 15% of a £10 plan and 7.5% of a £20 plan. Which? made the same point in February 2025: it reported rises of £1.50 a month at EE, £1.80 at O2, £1 to £1.50 at Three and £1 to £1.80 at Vodafone, which worked out at proportionally larger hikes on cheaper plans, up to 14.3% on one Vodafone deal. Which? also noted that bundled handset-and-airtime contracts could see larger increases.

Rises have not stopped. In February 2026, Sky Mobile applied a fixed £1.50 a month increase on most of its monthly data tariffs from 14 February, its first mid-contract rise in more than seven years, according to ISPreview, which reported that affected customers could cancel without early termination charges.

A "no rise" promise has limits. Even fixed-price plans revert to a different price after the initial term ends, and a headline monthly price tells you little until you've added up the whole term.

What to Check Before Signing

  1. Find the pounds-and-pence line. The contract should state exactly how much your bill will rise and when. If you only see a percentage or "CPI", you may be looking at an older-style contract.
  2. Add up the full-term cost. Multiply the monthly price by the term, then add each stated rise for every month it applies.
  3. Compare against a fixed-price plan. Use the total, not the headline monthly price.
  4. Separate the phone from the airtime. Which? recommended buying handsets outright and choosing SIM-only deals with rolling or fixed terms to avoid compounding rises.
  5. Diary your 30-day windows. If you get a notice for a rise you didn't agree to, note the date, because the penalty-free window is short.
  6. Set a reminder near renewal. Plans can change price when the initial term ends. If you're signing now, the contract may run well into 2027, so check what the price becomes then.

What to Do If You're Already Hit With a Rise

Read the notice and your contract. If the rise was clearly specified in pounds and pence when you signed, it's generally allowed. If it wasn't specified, or exceeds what the contract said, you should be offered a way out within the 30-day window. If you're unsure, check Ofcom's guidance or ask your provider in writing before acting.

FAQ

Is a mid-contract price rise on a UK phone plan legal?

Yes, if it is clearly set out in the contract. Since 17 January 2025, new contracts must state any rise in pounds and pence at the point of sale, and inflation-linked or percentage-based terms are banned in new contracts, per Ofcom.

Which UK networks don't raise prices mid-contract?

Some SIM-only brands advertise fixed pricing for the term. iD Mobile, for example, said in January 2026 that its SIM-only plans have no annual price rises. Always verify the current offer, since terms change.

Can I leave my contract early if my price goes up?

Sometimes. Ofcom says you get 30 days after notice to exit penalty-free if the rise wasn't specified in your contract or is higher than the contract said. If it was clearly stated in pounds and pence when you signed, you generally don't get a free exit.

Does this apply to broadband too?

Ofcom's January 2025 rule covers phone, broadband and pay-TV services, so new broadband contracts must follow the same pounds-and-pence rule.

Hype-o-meter: Earns It

Checking for a fixed price, or at least a clear pounds-and-pence rise, before you sign genuinely protects you from a real and common cost creep in UK mobile. The rules are better than they were, but legacy percentage clauses and fixed rises still exist, so it's a small check that can save real money over a two-year term.

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