Broken Seat release lever 3 Dr VW Golf

I have a M registration (1995) 3 door VW Golf 1.8LD which currently
has a problem with the drivers seat. The problem is when pulling the
lever up on the side of the seat the latches that let the seat flip
forward (so passengers can get into back seat as it's a 3 dr) doesn't
release the seat.

I looked at the seat and found that there are two claw type latches
that lock the seat back in place. The lever in the side of the seat is
attached by a thin steel cable to one of the latches and another steel
cable which then attaches (somehow?) to the other latch. When the
lever is pulled both catches flip up and the seat can be pushed
forward. The cable that ones from one latch to the other has broken
(snapped at cable/bracket join).

Does anyone know if you can purchase just this cable or is it the
whole seat back? If it's the whole seat I did consider visiting a
breakers to replace it rather than the main dealer as I would think
these seats are expensive to replace.

If anyone has any suggestion or has fixed this before it would be
really useful to know.

Thanks in advance