Mystery Maker Zombies

Last time I mentioned that David/Darkoath had sent me a package of out of production 28mm scale zombie figures. I reviewed the five John Jenkins Designs Communist Party Zombies that he sent me. Also in his parcel were these three zombies. I have no idea who made them and neither did Darkoath.

At the far left is a male zombie in a two-piece suit. He has a large bite wound to his upper left arm and a smaller wound to his right arm. There are numerous bullet wounds to his back but no exit wounds on his front.
From the front, the zombie in the centre of the group looks unharmed. However, when you see him from behind that is certainly not the case. He has a massive wound to his back that reveals most of his spine. As if that wasn't bad enough, he has lost a large chunk of his hair as if he had been partially scalped.

Third and last in line is a zombie biker in faded denims and black leather jacket. His stomach is just a gaping hole with internal organs spilling out. There is a long diagonal cut to his back. His left hand, chin and neck are smeared in blood.
These are not particularly good sculpts. There is a crudeness to them that you rarely see nowadays. Their heads are too big for their bodies and their legs are too short. Their hands resemble a bunch of bananas. They are slightly overscale with each one being 30mm tall, from the soles of their feet to the tops of their heads. They do remind me of the sculpts from a figure company called Hero Miniatures who were active in the i990's before they closed for good. However, I don't ever remember seeing these three in their catalogue. They came with integral bases rather than slottatabs, but there was no identification marks on the bases. If anyone can identify who made them please leave a comment.