How to check if your broadband and mobile provider is overcharging you mid-contract

The Mid-Contract Price Hike Trap

Many UK households are currently locked into broadband and mobile contracts that include clauses allowing providers to increase prices annually, typically in line with inflation plus an additional percentage. Since 2026, Ofcom has introduced stricter transparency rules, requiring providers to set out exactly what price increases customers will face in pounds and pence from the start. Despite these rules, millions of us sign contracts without fully calculating the cumulative cost over an 18 or 24-month period.

If you signed a contract before these transparency rules were fully enforced, or if you simply overlooked the small print, you might be paying more than you need to. Providers often bank on the fact that the hassle of switching outweighs the cost of the monthly increase.

How to Find Your Contract End Date

You do not need to hunt for paper documents to find out when your current deal expires. Ofcom rules require providers to send you an 'End of Contract Notification' between 10 and 40 days before your contract finishes. However, if you have lost track, the fastest way to check your status is to text 'INFO' to 85075 from the mobile number associated with your account. For broadband, log into your provider’s web portal or mobile app; the 'Contract' or 'Account Summary' section usually displays your 'Contract End Date' clearly. Knowing this date is your biggest leverage for negotiation.

Challenging Unfair Increases

If your provider has hiked your bill mid-contract by an amount higher than the rate you were originally quoted, or if you believe you are being subjected to a price increase that was not clearly stated in your initial terms, you have grounds to challenge. First, gather your original contract documents. If the provider has deviated from the agreed-upon inflation index or the percentage 'plus' figure, you can raise a formal complaint.

Always use the internal complaints procedure of your provider first. If they do not resolve your issue within eight weeks, you can escalate the matter to an independent alternative dispute resolution (ADR) scheme, such as CISAS or Communications Ombudsman. These services are free to use and provide an impartial assessment of your dispute.

Negotiation Strategies for Better Rates

Never accept the first renewal offer presented to you. When you are nearing the end of your contract, call your provider’s 'retentions' or 'loyalty' department. Use sites like MoneySavingExpert to check what new customers are currently paying for similar speeds or data packages.

When you speak to an agent, be polite but firm. State that you are aware of better deals available to new customers and mention that you are prepared to switch. Providers have strict budgets for customer retention and are often authorised to offer 'in-market' deals that are not available to the general public. If they refuse to budge, request your PAC (Porting Authorisation Code) for mobile or confirm your cancellation date for broadband. Often, this move alone prompts the provider to offer a significantly lower price to prevent you from leaving.