A new Code of Practice which has been put forward by Ofcom will seek to ensure customers are not misled over broadband speeds.
Companies providing 95 per cent of the UK's broadband coverage have signed up to the voluntary code, which will see prospective users informed of the maximum speed that their connection can support before signing up for a deal.
More detailed explanations for the possible slowing of connection speeds will be given to customers before they put they put their name to a contract, with advice on how to counter these difficulties being offered.
Ofcom said in a statement: "As we ask the internet to do more and more for us - such as bringing us TV programmes, movies and games - Ofcom has found a rising number of ISPs selling their services by claiming faster and faster broadband speeds.
"We therefore want ISPs to give better and more realistic information. We've asked them to sign up to a voluntary Code of Practice on how they present broadband speeds to you."
Another guideline is that if the connection speed a customer ends up receiving ends up being lower than the given estimate, the provider would then be obliged to offer an alternative package.