1914
HQ A, B, C, F, G, H Company 1st (City of London Battalion
The London Regiment (Royal Fusiliers)) HQ and 1-3
Battery and Ammunition Column London Brigade RFA
1916
Drill Hall designated as Territorial Force Depot No. 31
1936
1st City of London Regiment (Royal Fusiliers) HQ
90th Field Brigade RA
357th (1st City of London) Field Battery RA
358th (2nd City of London) Field Battery RA
359th (3rd City of London) Field Battery RA
360th (4th City of London) Battery (H)
1947
1st City of London Yeomanry/Rough Riders (TA)
(in Yeomanry House)
240 Field Regiment (City of London) RA (TA)
(in Artillery House)
290 Field Regiment LAD REME (TA)
1st City of London Yeomanry (Rough Riders) LAD REME (TA)
1965
3 Military Intelligence Battalion
1990
HQ Intelligence and Security Group
22 Military Intelligence Company
University of London Contingent Officer Training Corps
1992
University of London Officers Training Corps