You seem to be gearing up to embark on an anti Ineos crusade, while I appreciate that you feel aggrieved by your experience with your Grenadier surely you have better things to do with your time. Its an inanimate hunk of metal, if it no longer sparks joy in your life maybe you should do a Marie Kondo and discard it for the market price. The Grenadier is a niche model from a niche brand and its also the start of a new financial year in the UK, the UK economy is stuffed so dealers wont be taking risks buying vehicles like this outright when they can invest that money in other safer options. Wait a couple of months into the new FY (I would try June), find another vehicle that does bring you joy, go to a bunch of dealers on the last two days of the month and secure the best trade in deal you can haggle. All you need to find is a weak sales manager who has not met their targets for that month or quarter and has the dealer principal busting their chops, they will do almost anything to get your business. I recently ordered a new fully loaded Skoda 2025 Kodiaq for the other half, yet to be released new model where dealers usually don't offer deep discounts. Trading in our seven year old Kodiaq, could not get better than $42K changeover from a couple of dealers, I had offered to buy at $40K, did the rounds and found a different dealer who was hungry for business and signed up at $38K including a 5 year service plan (worth $3K). Otherwise sell it privately, look at the prices for same year & specced vehicles on the most popular UK private sale site, take the average of the lowest 25% of prices and advertise for that and you will move it.