My ancient 9019 Type 1 B&D cordless screwdriver has knackered batteries
(again). IIRC the last time I had to replace the batteries they weren't a
standard size so had to buy an expensive B&D part.

Looking about for a replacement they all seem to be "gun" shaped these
days. I don't like that in a screwdriver. The 9019 is fixed and straight
and does what I want. What is out there that matches this spec?

Straight handle, doesn't need to bend, would prefer if it didn't.
Automatic spindle lock.
Variable torque control.
Bi-directional.
Standard 1/4" hex drive.

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Cheers
Dave.