Barholm (click on photographs to bring up bigger/better versions).

Barholm, Lincs. Thanks to John Hurst for the photo on the left and to Mike Woolford for a 2015 update, on the right (where you can also spot a semi-rotary).

Markings: None.

Manufacturer: Unk.
barholm, 2015

barholm, 2015 The semi-rotary at Barholm, Lincs.

Markings: No5. (This suggests a 1½" bore.)

Manufacturer: Unk.