Britain’s four major mobile network operators, O2, Vodafone, 3 and Everything Everywhere, have announced that mobile network will not be ready for the London Tube for the opening of the July 2012 Olympic games.

The four companies issued a joint statement saying, "We have been working closely with infrastructure partners and London Underground for some time with the hope of delivering mobile services to the London Underground and are disappointed that it will not be possible to deliver such services in time for next year’s Olympic games.

However, the companies said that the service will be provided at a later date.

The statement said, "As a group, we will continue to positively explore all other avenues available to us in order to provide a service at a later date."

The companies said that the engineers were given just three hours a night, insufficient for completing the £150m project. They have abandoned the project despite the fact that the Chinese telecoms company Huawei had offered to fund up to £50m of technology as an "Olympic gift".