The green label Zonophones are in a miscellaneous pile somewhere and make take a time to find, but I can give you the red label Regal Zonophone details. Master numbers on the left. Catalogue numbers on the right:

X5 42454 Buttercup Joe      T.5178
X5 42453 The Old Sow       T.5178
30 8012   The Farmer's Boy    T.6060
30 8013   Sarey             T.6060

Tony Barker tells me that Richardson also recorded 'The Fly be on the Turmut' and 'The Old Sow' for the Eclipse label, but I have no further details. Hope this is of some help.