PM Sent.... Thanks!
I epoxied the broken pocket but pieces are missing. It crumbled around the rear attaching point as well.
I have wondered if it would be possible to have someone scan it to create STL files for 3D printing a new pocket. I know the texture would not match the original but it could be smoothed and painted to match the interior colour.
Then we could make replacement pockets out of fresh ABS which isn't so brittle.