hi hun I don't know about - car finance but they miss sold my loan and insurances luckily I had a refund through the finantial services compensation scheme they are currently paying out this moment for and behalf of welcome finance ring them and they will be able to tell you
you need a dsar (data subject access request ) under the freedom of information act you are requesting a full dsar you will have to phone welcome tell them that you are requesting a full dsar and they will tell you that you will have to send a cheque payment to welcome finance of 10.00 this gives you a copy of all the information about the sale of your policy who the underwriters are insurers everydetail the hold on the system will be provided to you they cant deny this because if they do you can report them to the ico - information commissioner you can still phone the ico.org.uk - because they are withholding information from you and this is against the law under the freedom of information act - you can report them for this but do ask for a dsar and then you will have the information that you need for your claim
so you need to
contact welcome and request a full dsar
phone finantial services compensation scheme and start your claim - they will probably have the information of the underwriters there because many people would have gone to them for welcome re- claim as I know they are paying out at this moment and still taking on welcome complaints .
and if you still feel that welcome are withholding information go to them you can speak to them in person and the website address I have given you they have a live chat option also . I hope it goes well and start tomorrow give them a call . these people will help you like they helped me .