Lottee,
Have you seen the UK Incoming Passenger List, on Ancestry? There is a 'Victor James Lawrence' listed therein - I know it is not a piece of the military puzzle, but thought it might be of interest if you hadn't seen it.
Date: 12th August 1924
Name: Victor James Lawrence (b. circa 1898)
Occupation: Merchant's Assistant
Address: 24, Richmond (Terrace?), Meston Road, Wandsworth.
Ship: ZARIA
Port of Embarkation: Calabar, Nigeria
Port of Arrival: Liverpool
Regards,
Peter