So these have been found thanks to Anthony - currently stored at a private location.
97701 is the Moyse loco formerly part of Matisa ballast cleaner 76105.
77106 is a Matisa ballast regulator previously at K&ESR and latterly Rother Valley Railway.
The owner is looking for a new home for them so if anyone would like a project please get in touch and we'll put you in touch.