| 1893 | | Addition | New workshops on corner of Fountainbridge and Gilmore Park. |
| 1917 | | Addition | Additions to tyre making department |
| 1957 | | Destruction/demolition | 'demolition work almost complete' per Builder 20 Dec. 1957, p1112 |
| 1957 | | Build/construction | '₤3 million modernisation plan for the erection of a new 145,000 sq. ft. one-storey factory building in Edinburgh...demolition almost complete and work on the foundations begun. ...Messrs. George Davie, Crawford and Partners, Glasgow, are advising on technical matters for the new mechanical plant and Messrs. Strain and Robertson, Glasgow, on the steam boiler plant required for the new factory.' per Builder p1112
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| January 1969 | | Destruction/demolition | CHECK - building destroyed by fire in Jan 1969 (or was it 202750?)? http://heritage.scotsman.com/historic-sites/Factory-goes-up-in-smoke.3464366.jp |