Two men who were selected at random and repeatedly stabbed in the street 'for fun' by serial killer Joanna Dennehy have relived their ordeals in court.

After killing three men in Cambridgeshire, the 31-year-old murderer travelled 140 miles across the country to Hereford searching for further victims, Cambridge Crown Court heard.

As she scoured the streets, Dennehy told one of her alleged accomplices: 'I want my fun,' prosecutors said.

Robin Bereza and John Rogers both suffered multiple stab wounds after she set upon them as they walked along busy streets in Hereford in broad daylight.

Mr Bereza told the court how he had been walking his dog and was struck twice by Dennehy before he realised what was happening.

Jurors were shown graphic photographs of his injuries.

Giving evidence, a shaken Mr Bereza said: 'I saw the lady with that thing in her hands. I didn't know what it was.

'I got worried then, frightened. I said: 'what are you doing?'

'She said 'I'm hurting you, I'm going to f****** kill you'.'

Dennehy, of Orton Goldhay, Peterborough, has admitted murdering Lukasz Slaboszewski, 31, John Chapman, 56, and Mr Lee, 48, who were found dumped in ditches in March and April last year.

She has also admitted the attempted murder of Mr Bereza and Mr Rogers and preventing the lawful and decent burial of all three murder victims.

Two men, Gary Stretch and Leslie Layton, are standing trial accused of helping her dispose of the bodies and covering up her crimes.

Witnesses described how after the April 2 attacks in Hereford, Dennehy was seen smiling.

Describing the attack in Westfaling Street, near the junction with Holmer Street, on April 2 last year, retired fire service worker Mr Bereza said he tried to fight her off but his kicks seemed to have no effect on her.

'I felt a blow to my right shoulder. I turned around and saw this lady, she just stared straight through me,' he added.

'I kicked her and made contact. It had no impact on her. She just came straight towards me.

'I ran into the road. I put my hand to my jacket and saw all this blood.

'She tried to come for me again, I kicked her again; she still didn't react.'

Mr Bereza was treated by paramedics before being taken to hospital by air ambulance.

He remembered seeing Dennehy speed off in a car, driven by a 'big gentleman'. Prosecutors earlier said 7ft 3ins Stretch was driving the car.

After attacking Mr Bereza she went on to attack Mr Rogers as he walked on a cycle path.

He suffered stab wounds to his back and chest.

'I turned around and saw the woman who stabbed me just standing there,' Mr Rogers said. 'She started stabbing me in the chest.'

He asked Dennehy: 'What's this all about?' and she commented on the fact he was bleeding, adding: 'I better do some more', the court heard.

'She didn't seem to be showing any emotion,' he added.

'She didn't seem to be enjoying herself. She just seemed like she was going about business.'

Mr Rogers said he fell to the ground but the attack continued as he drifted in and out of consciousness.

'As I lay there I thought 'this is where I'm going to die',' he said.

Passers-by stopped to help Mr Rogers before he was taken by air ambulance to hospital for life-saving surgery.

Stretch, real name Gary Richards, 47, of Riseholme, Orton Goldhay, Peterborough, has denied three charges of preventing the lawful burial of all three men and two counts of attempted murder.

Layton, 36, of Bifield, Orton Goldhay, has denied perverting the course of justice and two counts of preventing the lawful burial of the bodies of Mr Chapman and Mr Lee.

A third man, Robert Moore, 55, of Belvoir Way, Peterborough, has admitted assisting an offender and is also awaiting sentence.