You CAN NOT withdraw a statement. Once made it forms part of the evidence if the case does get to court. The only thing you can do is to make a second statement explaining why the first one was wrong, both statements will used as evidence in court.
You say you will be in danger as the defendant & his family live on the same estate as you do. Fear of reprisal is one of the main reasons that people want to withdraw a statement and is also the reason that you can not withdraw it. You need to tell the police that you are scared of the defendant and his family and need protection against them. The police take such fear VERY seriously and will warn the defendant to stay away from you. Interfering with or intimidating a witness is a serious offence that will make the sentence he gets a lot more severe . From the wording of your question and reply I do not believe that the real reason you want to withdraw then statement is that it is not true. I think you want to withdraw it because you are scared of the offender and his family.
The police will be thinking the same thing and so will a judge and jury.
In short withdrawing the statement is not a good idea, if you refuse to attend court you can be arrested and taken to court as a 'hostile witness' which will just be more evidence that the defendant is trying to threaten you. It can end up being worse for you and for the defendant!
The Trident team deal with serious crime and major investigations , the fact that Trident are running the investigation is proof that this is rated as a major crime, you can be put on the witness protection scheme if you ask for it, so DO IT NOW!