'SM', 'S.M.' or 'S/M' and what it means!

[David_Hayward (RIP)]

Isn't that FULLY C.D.L.V., which stood for Contract Demand Land Vehicles?

To confuse the Ministry of Supply placed Demands overseas for CMPs under the S/M 2XXX series and then the actual contracts for assembly at Dagenham, and probably also other plants, had a 'V.XXXX' series one allocated. This was the domestic series. No doubt rebuilds had the same subsequently.