Ofcom has announced plans to consult on how to protect consumers from unexpected price rises within landline, mobile and broadband contracts.
The media regulator - which launched a review into unfair contract terms earlier this year - has identified a number of issues with the effectiveness of the current rules.
As such, it is looking for ways to reduce the potential for consumer harm.
Ofcom will consider whether price variation terms in fixed-term contracts are appropriate.
The regulator will look at related issues including the transparency of price variation terms, and the information provided to consumers at the point of sale.
Claudio Pollack, Consumer Group Director at the watchdog, said Ofcom "understands the frustration" consumers feel when faced with price rises in what they assume to be a fixed contract with a set price.
"Having considered the large number of consumer complaints, we will soon consult on ways to address consumer concerns and ensure they are being treated fairly in this area," he stated.
Ofcom plans to publish its findings from the consultation by the end of 2012.