121 Transport Column RASC (TA)
| Date | Unit | Sub-units/Remarks |
| . | . | . |
| . | 121 Transport Column RASC (TA) | . |
| Summer 1955 | 1 AA Group Column (North) RASC (TA) re-organised and redesignated as 121 Transport Column RASC (TA), 902 and 927 Companies remained and were joined by 901 and 917 Companies from 1 AA Group Column (South) Column | Eastern Command |
| . | HQ at White City, London | . |
| . | 901 Company at Richmond | . |
| . | 902 Company at White City | . |
| . | 917 Company at Ealing | . |
| . | 927 Company at Norwich | . |
| 1956.08 | Annual camp at St. Martins Plain Camp, Shorncliffe | . |
| 1957 | Column Headquarters moved from White City, W.12 to Kensington, W.10, and took over command of 557 and 592 Companies. 927 Company moved to 54 (East Anglia) Infantry Divisional Column, RASC (TA) | . |
| 1957.06 | Annual camp at Shorncliffe | . |
| 1958 | 557 (Herts) Company (Tank Transporter) at the Drill Hall, Barnet | 901, 902, 917, 557 Companies |
| 1958.07 | ten days mobile camp taking in most of the south-west | . |
| . | Column Workshops, R.E.M.E., from Wolverton Bucks | . |
| 1960 | Greenfields Camp was held in the field between London and Tavistock | . |
| 1961.03 | Disbanded, a Farewell Parade for the whole Column was held at Inglis Barracks, Mill Hill, when the salute was taken by the Honorary Colonel | . |
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