Hit With a Broadband or Mobile Price Rise? How to Challenge It — or Leave Penalty-Free (UK)

Every year, millions of broadband, mobile, and TV customers open a message telling them their bill is going up — often by more than the headline rate of inflation, and often part-way through a fixed contract they thought protected them. For a long time these mid-contract rises felt like something you simply had to accept. That is no longer the whole story. Ofcom, the communications regulator, tightened the rules in January 2025, and depending on when you signed up you may be able to challenge the increase or leave without paying an early-exit fee. Here is how to tell which camp you are in — and how to put your provider on notice in writing.

Two Questions Decide Your Rights

Before anything else, work out the answers to these two questions, because together they determine what you can do:

• When did you sign or last renew this contract? Before or on/after 17 January 2025?
• Was the price rise clearly set out — in actual pounds and pence — when you signed up? Or is it a percentage / inflation-linked increase, or a surprise you were never told about?

Those two facts point you to one of the outcomes below.

The New Rule: Rises Must Be in Pounds and Pence

From 17 January 2025, Ofcom banned providers from writing inflation-linked (CPI or RPI + X%) or percentage-based mid-contract price rises into new contracts for mobile, broadband, home phone, and pay-TV. If a provider wants the right to raise your price during the contract, it must now tell you the increase in clear pounds and pence, upfront at the point of sale — for example, "£30.00 per month, rising to £31.50 from 1 April 2026". This sits under Ofcom's General Condition C1 on contract requirements. The aim is simple: no more vague "your price may rise by CPI plus 3.9%" clauses that nobody can actually budget for.

When You Can Leave Penalty-Free

The strongest protection applies where a rise was not clearly agreed in pounds and pence upfront. This typically covers older contracts (signed before the new rule) that still carry percentage or inflation-linked terms, and any change the provider makes that is to your material detriment. In those cases, Ofcom's rules require the provider to:

• Give you advance notice — generally at least 30 days — before the change takes effect; and
• Tell you about your right to exit the contract penalty-free if you do not accept the change.

If that applies to you, you can cancel and walk away without an early-termination charge — usually within the notice window the provider gives you. Providers do not always make this right obvious, so a clear written notice that you are exercising it is what gets it honoured.

When You Probably Cannot — and Why It Can Still Feel Unfair

Here is the part it is important to be honest about. If you signed on or after 17 January 2025 and the rise was spelled out in pounds and pence when you agreed, then when that pre-agreed increase happens it is not treated as a "change" to your contract — you consented to it upfront — so it does not trigger a penalty-free exit. Any letter that claims otherwise for a properly disclosed, pre-agreed rise is likely to get a firm "no".

That said, the new system is not perfect, and even Ofcom has said so. In late 2025 some providers announced fixed-pound mid-contract rises that, on cheaper SIM-only deals, worked out as very large percentage increases — technically within the rules, but Ofcom itself publicly criticised the approach as going "against the spirit" of the reforms. So if a pre-agreed rise feels disproportionate, it is still worth complaining and checking the current position — the rules in this area are under active scrutiny and may tighten further.

Which Services This Covers

The Ofcom rules apply to consumer contracts for mobile, broadband, home phone, and pay-TV. A couple of points worth knowing:

• Social tariffs — the discounted broadband and phone packages for people on Universal Credit, Pension Credit, and similar benefits — are exempt, because they are designed not to carry in-contract price rises at all.
• Business contracts can work differently from consumer ones, so if your contract is a business account, check its specific terms rather than assuming the consumer protections above apply.

Already Out of Contract? You Can Just Leave

If you are past your minimum term, none of the exit-fee questions matter — you are free to switch or cancel at any time with no early-termination charge. The only thing a provider can usually ask for is a short notice period (often up to 30 days) before the service actually ends; that is not a penalty, just a wind-down window. If you are on broadband or a home phone line, switching is now easier too: under the One Touch Switch process, live since 12 September 2024, you only have to contact the new provider, who arranges the switch and cancels your old service for you.

What Your Complaint Letter Should Say

If you believe a rise is unfair, undisclosed, or gives you the right to leave, a firm written complaint that shows you know the rules is what gets a proper response. Your letter should:

• Identify the contract and the increase — your account details, the old price, the new price, and the date it takes (or took) effect.
• State when you signed up and whether the rise was set out in pounds and pence at that time.
• Set out the right you are relying on — either that the change was not clearly agreed upfront and therefore entitles you to exit penalty-free, or that you want the increase reviewed as disproportionate.
• Refer to Ofcom's rules on mid-contract price rises and notification of contract changes (General Condition C1).
• Say clearly what you want — to cancel without an exit fee, to have the rise reversed, or a written explanation of why the provider says the rise stands.
• Give a deadline for a full response and state that you will escalate to the relevant ombudsman if it is not resolved.

If Your Provider Says No

If your provider rejects your complaint or does not resolve it within six weeks (reduced from eight weeks in April 2026), or sends you a "deadlock" letter sooner, you can take the dispute — for free — to an independent Alternative Dispute Resolution scheme. Every provider must belong to one of the two Ofcom-approved schemes: the Communications Ombudsman or CISAS. The scheme reviews the case independently and can order the provider to put things right. A clear, well-documented complaint that engages with Ofcom's rules gives you the strongest footing.