The answer is that the insurance company have to repay benefits out of any settlement. Your lawyer will advise what is involved. All claims are registered with the government body known as the CRU (Compensation Recovery Unit). They also reclaim from insurance companies costs of hospital treatment after road traffic accidents. This does not affect you.
One that has experience in personal injury claims. You can check from their website or a legal guide (Chambers or Legal 500 or see if they are members of the Association of Personal Injury Lawyers (APIL) or Motor Accident Solicitors Society (MASS)).
Sometimes insurance companies pay in two to four weeks. However, there can be complications particularly in complex cases where payment may not be made for around eight to twelve weeks or longer.