The family of a young England fan who could yet lose his sight in one eye after a nightclub assault in Norwich have expressed their 'anger' and 'disappointment' after it emerged there was insufficient evidence for anyone to be prosecuted.

Ryan Warren, 19, has undergone two operations to try and reattach the retina in his left eye after being hit with a glass bottle at Wonderland nightclub in the city's Riverside during the 2-1 defeat to Italy in June.

Mr Warren, who was 18 at the time of the attack, still has no sight in his eye and has to go back to hospital later this month to find out if anything else can be done.

And now following the trauma of the attack and life-changing injury suffered by Mr Warren he and his family have been dealt a further blow after police informed them the Crown Prosecution Service (CPS) have decided there is insufficient evidence to prosecute anyone for the assault.

A police spokesman confirmed a 29-year-old man was arrested in connection with the incident but was not charged with an offence following advice from the CPS.

A spokesman for the CPS said: 'There wasn't sufficient evidence to identify the suspect as the person who hit the victim with the bottle.'

It is believed poor CCTV footage, conflicting evidence from eye witnesses and ultimately no positive identification of the person responsible were all factors in the decision.

Mr Warren's grandmother Christine Wooster has spoken out about the decision on behalf of the rest of the family and said they are both 'disappointed' and 'angry' at what she described as a 'double blow'.

Mrs Wooster, 68, from Attleborough, said: 'We're just really disappointed. Really disappointed.

'It just makes me so angry. The thing is if he's done it once he could do it again.

'It's really, really disappointing. You expect justice to be done and unfortunately these days it isn't.'

The mother-of-three and grandmother-of-five said Mr Warren only saw the arm of the attacker and urged anyone who might know the identity of the person responsible to do the right thing.

She said: 'It could be that people are afraid of any comeback if they do come forward. But I would urge them to look at their conscience and come forward.'

As a result of his injury Mr Warren, who lives in Attleborough with older brother Robert, 22, and parents Helen and Ray, has been unable to complete his apprenticeship with Thetford-based body repair firm Gladwins.

He has also missed out on a holiday to Bulgaria with his friends for which he had paid but was unable to go on because he could not fly following an operation on his eye.

Mrs Wooster said he was really disappointed to miss out on the holiday but said his friends, who have been really supportive, were hoping to pay for another break for him.

The 'significant eye injury' suffered by Mr Warren in the assault is believed to have happened following England's equaliser which sparked an outbreak of disorder at the venue where beer was being sold for 80p in glass bottles rather than plastic ones.

It has since emerged that the club closed after a message was posted on its Facebook page saying: 'Wonderland is closed until further notice, we are sorry for any inconvenience'.

Anyone with information about the assault should call police on 101.