Can’t help with a badge but I have scanned a Geest leaflet that shows the badge if that is any help. Good to see a Geest truck restored as I dont think there are many about.
I only learnt of P R Motors through the work I have been doing as a volunteer at MERL cataloguing the Geo Monro drawings they have. P R Motors name appears on some of the drawings and it appears they carried out some machining and assembly work for Geo Monro during production of the Rototiler 56 and 35.
Michael, you have come to the right place. If you send your e mail details to the club e mail address vhgmc@btinternet.com I can let you know about obtaining manual and clutch plates. If you have the machine serial number I can also look it up in the factory records and date it for you.