So I used the template on the MSE forum last night to email the dealer where I got my financed car from in 2011.
They’ve just emailed me back this ‘I can advise that the finance house was Santander Consumer UK Ltd, however due to time passed and data protection, we no longer have the file as it will have been destroyed.’
Is that it then? Or does anyone know where I could go from here to see if I am owed anything?