A series of health scares have prompted Harrogate and Knaresborough MP Phil Willis to set up the group.

Heavy use of mobile phones has been linked with headaches, short term memory loss and even the development of brain tumours, although one study claimed they could speed up mental reactions.

The government's official watchdog, the National Radiological Protection Board (NRPB), says there is no evidence of a link between mobiles and health problems, as do the mobile phone manufacturers.

But the all-party group will hear from experts, and may press for tighter safety limits on the devices.

Transmitter risks under scrutiny

It will also examine any potential health risks caused by mobile phone transmitter masts, which are being set up across the country.

MP Phil Willis is launching the group

Mr Willis said: "There is a lot of cross-party concern, and a significant number of MPs are interested - after all, this is something that affects every constituency."

The group will be launched at a meeting at the House of Commons on Tuesday June 15, which will be addressed by radiation experts from Britain, the US and Austria.

With the official endorsement of the Speaker of the House of Commons, Betty Boothroyd MP, the group will be able to hold meetings in the Commons itself.

Mr Willis said: "Creating an official House of Commons all-party group gives an air of authority.

"We would have access to government ministers. Information requests from all-party groups are always taken seriously."

Group plans website

He plans to set up a website detailing the group's activities and the evidence it has collected.

Much of the debate so far has concentrated on the heat radiation emitted by mobile phones - for which there are strict NRPB limits.

The parliamentary group, however, plans to examine any possible problems caused by lower intensity electromagnetic radiation.

Scientists are not sure if phones could cause damage

Instead of heating the brain up, researchers speculate that it matches the "resonant frequency" of some areas of brain cells, and makes them vibrate, perhaps causing the headaches and memory loss reported by some users.

But none of these theories have been tested by any practical research, as any effects of low-intensity electromagnetic radiation is extremely hard to measure.

And one study suggests that mobile phones could actually speed up your mental reactions by up to 4%.

Among the experts addressing the House of Commons rally on Tuesday is Dr Gerard Hyland, from the University of Warwick, who is convinced that the government needs to rethink mobile phone radiation safety limits.

Also present will be Dr Henry Lye, who featured on a BBC "Panorama" investigation, and Dr Michael Kundi, from Vienna.