Hello,
A bit more rummaging in some back issues of Farm & Horticultural Equipment Collector magazine (Kelsey

) finds an identity assistance section question..which shows a poorly rusty tiller which was subsequently identified in the next issue as a Farmers Boy Minor by a reader...it would appear to be all but the same as the allotment.org forum machine.
So with this in mind I suspect yours is a Farmers Boy..and most likely Minorette.
All the best,
Clive.