Can you sorn it? Send in a sorn application and see what happens. That's how i got one, but that was when they where changing from old to new
I never did get round to sorting this out. Has anyone done it since Swansea took over? I really don't want to loose the original green book.
If the green one was in your own name and address, maybe you could just say you lost it and ask for a duplicate. They would have a record of you being the registered keeper.
Probably just as handy to say you are the new keeper of the vehicle and apply for a new V5 on that basis.
Might mean that if there had been any issues or liabilities attached to the old car, then you should be clear of them as the new keeper.
Dont even bother mentioning you have the green V5 as they wont have a clue what it is anyway