Update - New lock mechanism arrived connected the relevant bits, car can see lock and will close etc electronically, however will open from inside but not outside so more googling required, love this thing  2013 L405 Autobiography Baltic Blue
2007 L322 Vogue Buckingham Blue

Update, hasn't been a priority however have now managed to get it to open from outside as well as inside. For a non technical individual I have learnt a lot, I have no idea how a specialist would do it any differently, there is no way into the lock once deadlocked, anyhow, knowing what I know now it wouldn't take long but still messy b  2013 L405 Autobiography Baltic Blue
2007 L322 Vogue Buckingham Blue

10/10 for perseverance, but I guess you didn't really have a choice

Alistair, it has been a journey, the most important part for me was taking the saw to the door, not something you can comprehend as a lay man, however it has all worked out, the reason I didn't send it to my indy was time, they were 2/3 months before looking at it and a rear door is not a big issue on a daily basis, just MOT time  2013 L405 Autobiography Baltic Blue
2007 L322 Vogue Buckingham Blue