Sorry if this is a bit waffly, I'll try to keep it short.
Adult sibling passed intestate. No children or partner. Parents are N.O.K. They are divorced and have limited contact. Both parents want the estate dealt with a.s.a.p.
Eldest adult sibling (I'll call them ES) was given permission by NOK to deal with probate. Deceased's vehicle (worth approx 17k) forms part of the estate. ES was allowed to drive the vehicle to keep it going but was aware in writing it is not theirs to keep but permitted to drive it. For road tax etc purposes NOK put V5 into ES name. Papers for vehicle including V5 held with NOK.
ES wrote their own car off and then had to rely upon using deceased's vehicle for a year until they could afford to get their own but still aware not theirs to keep or sell and was unsuitable for their needs. ES needs a family car for car seats and pushchairs etc and deceased's vehicle is a sports car. ES has since purchased a large family size vehicle and has announced that they intend to sell the deceased's vehicle and keep proceeds. ES has also spent all of the money in deceased's bank account and intercepted a tax rebate and spent all of that too. ES hid it all from NOK. It was only when sorting through things with the bank that it came to notice.
Now ES has been told to give car back to NOK. ES has refused and told DVLA that the V5 is missing despite knowing the V5 is with NOK. New V5 has been issued and they are refusing to speak to NOK to avoid any questions or requests to hand the car back.
Probate have been told that ES deliberately left the car off the asset list. They said nothing can be done to add it to the asset list and to ring HMRC. HMRC said ring Police it is a theft and fraud issue. Police said sounds more like a civil dispute over ownership and not for them to look at.
We are going around in circles. Can anyone please advise?