Finding ownerhsip details of my old car through DVLA

[farmview11]

I am trying to find one of my old cars (assuming it still exists on the road). I know DVLA wont give out the details directly but understand they can contact the current owner on my behalf. What compounds the problem is that it was on my private reg no. and then was transferred to a date related number when I sold it -I dont know what this new reg no. was ?!!

Does anyone know if DVLA can help me with this, by providing details of vehicles that have been registered to me in the past.

Would love to be reunited with it now the kids are older.

Any help greatfully received.