All personal injury claims have time limits placed upon them. If you do not make a claim within this time, it can prevent you from claiming.
In general, you must make your personal injury claim within 3 years of the date of the accident.
However, there are rules which can change the time limit. So, if you are worried you have left it too long, it is still worth seeking advice. Whatever your situation, if you are thinking of bringing a personal injury claim, it is always best to seek legal advice as soon as possible.