A train conductor has challenged rail managers to put their wives on a late-night train so they can experience safety concerns first hand.

Train operators Connex employed private security guards last week to patrol trains after staff threatened strike action over fears about safety.

But conductors said only four such guards have been employed by Connex and it is not enough to ensure their safety. Concerns have mounted following a spate of attacks on train staff who are particularly worried about safety along the Brighton to Portsmouth Harbour service.

One conductor, who has worked in the industry for more than ten years, has now issued a challenge to test managers' confidence in their safety improvements.

The conductor, who does not want to be identified for fear of losing his job, said: "I'm not a troublemaker or a union agitator. I'm just Joe Bloggs and I've had enough.

"I think one night my boss should send his wife on her own on a late-night train down to Durrington.

"His wife should go down there on her own and see how she feels.

"I was spat at last week, that's common and I've been assaulted. I'm not a wimp, but sometimes I'm absolutely terrified."

Another conductor, who also did not want to be named, said he thought there were about five security guards working the routes, but agreed it was not enough.

He said: "They will be spread across all services and it is not enough. What can five security guards do."

Conductors have threatened to call for a ballot on strike action next week if adequate safety improvements are not made before Tuesday.

If strike action is taken, conductors would refuse to work after about 7.30pm.

Connex refused to reveal how much it is spending on the guards or how many security guards it is employing.

A spokesman said: "We are employing sufficient numbers to work in teams with our staff and police and we want to see how this works.

"We are confident it will enhance staff security.

"We believe it will make a significant difference and if it's a success we will be looking to extend it to other Connex services."

Connex bosses have also pledged to press for severe fines and compensation payments for staff who are assaulted by passengers.