Another visit to Manby today, with the kind permission of the airfield owners, and a couple more pictures...
From my copy of the 1971 Pooley's Flight Guide I discovered the following about Manby...
3.5NM SE of Louth.
Two tarmac runways - 11/29, 1,131 x 46m. 05/23, 1,141 x 46m.
Lighting: Ap. Rnwy. VASI. IBn.R. "MY"
Met Of. H24 2212
Remarks: Runways 23 and 29 right hand circuits.
Radio: TWR 122.1
Tel: Louth 2212.