Is he James Samuel Drury born in Shrewsbury abt 1822 ?
1861 census at 13 Radnor Place , Kensington
James S Drury head 39 MD London MRCP England ( transcribed as MRGP Ery )b Shrewsbury
Sophia L Drury wife 32 b London
1851 census
in the house of Thomas G Phillips 47 General Practitioner
James Drury 29 nephew MD London General Practitioner
Caroline Drury 31 sister
44 Albion Street , Paddington
Edit :
There's a Captain Archibald Hay , late Captain in the 89th & 86th Regiments, who died in May 1852 in Paddington. If you don't find any army connection for Dr Drury perhaps he attended Captain Hay in his illness ?