An inmate at The Mount prison has been sentenced to an extra three years in jail after headbutting a prison officer.

Bradley Doherty, 24, launched the attack on prison officer Russell Marton after being told he had to wait to receive medication for a broken arm.

The attack happened at around 8.40am on 31 May last year.

St Albans Crown Court was told Doherty was "anxious" to get to the medical area of the jail, in Bovingdon, that morning.

But in order to receive the medication, he needed to get an "ID confirmation".

Doherty was then told a roll call had to take place first and he would have to wait.

At this point, he headbutted Mr Marton full in the face, breaking his nose. 

He needed surgery and still suffers from blurry vision.

Doherty was serving a sentence for burglary and was due to be released later this year.

Today, Doherty received an "extended prison sentence" of five years - three behind bars and the remaining two on licence.