he is bringing a civil court case against a woman like, to try to get him to reveal who shot yvonne fletcherpeople deported from the embassy after the murder. he was arrested in 2015, in connection with yvonne's order. he was told by police in 2017 the case would not proceed. his son said at the time his father didn't do anything. iam now anything. i am now suing woman like in the civil courts. this is my last chance. i have waited 35 years for this. but it will happen. -- saleh ibrahim mabrouk. this is the site we re ibrahim mabrouk. this is the site were on the 17th of april 1984, pc yvonne fletcher was shot from the former libyan embassy and moderate. we have tracked down retired metropolitan police officers clive bovary, tony long, john murray and mattjohnson. the bovary, tony long, john murray and matt johnson. the police bovary, tony long, john murray and mattjohnson. the police hearts of john, yvonne and other officers remained at the scene for ten days. —— hads. clive maybury decided to ta ke —— hads. clive maybury decided to take matters into his own hands. when a person in uniform

we didn't realise it was yvonne fletcher, and that she'd died. was yvonne, which is particularly relevant to me because about six weeks prior to that yvonne had been at my housewarming party. when something like that happens, particularly when it happens to a close friend when you realise you are not invincible. in an instant, your life can end, simply by doing the job you have been called on to do. it had a profound effect on me and eventually resulted in me having to part company with the police. the retired officers are about to visit the met police museum at new scotland yard. they are going to seejohn‘s original police hat from 1984. morning, john. morning. nice to meet you. i've heard an awful lot about you. i've actually got your helmet in here. you haven't seen it for a few yeras, i think. it's been a long time. it's very important in the museum, takes pride of place in the section of officers killed in the line of duty, right next to yvonne's. it's been so long since i've seen it. the last time i saw it, i put it down in stjames' square,

why are you so determined to keep going, to find out who killed yvonne fletcher? that i would find out who did it and that's a promise i will keep to this day and thatis promise i will keep to this day and that is why i carry on. those were the last words she heard. you have said before i think, that you felt guilty that it wasn't you that died that day. why did you say that? on that day. why did you say that? on that morning of the demonstration we changed places to three times, you know, if we'd done it once more then it could have been me. if it had have been me yvonne would be sitting here now, doing exactly the same as iam doing. here now, doing exactly the same as i am doing. what do you think she would say if she knew? she would say, go for it, you can get him, i will get him. do you think you will find out who did it? there is no doubt about it at all, we will get justice for yvonne and we will find out who did it, yes. thank you so much for coming on the programme, we appreciate it. i want to read a couple of messages that you have sent in. you been watch