I am afraid the Solicitor is 100% correct. This is because the Mortgage Company will require the party to the Mortgage to be on the Deeds also and only that party.
Hence, if a Mortgage is required, the purchase will have to proceed in the sole name of the younger spouse.
Sorry this is not the answer you were looking for, but if I have helped, I would be grateful if you could rate my answer.
Hi, can I assist you any further? Kind Regards Al