| St Martin's School | October 2022 to Date | Full Details |
| Discovery Educational Trust | September 2021 to October 2022 | Full Details |
| St Martin's School | August 2014 to August 2021 | Full Details |
| Gaynes School | January 2007 to August 2014 | Full Details |
| International Financial Data Services | October to December 2006 | Full Details |
| Generic Software Consultants Ltd | August 2004 to December 2005 | Full Details |
| Capita PLC | July to August 2004 | Full Details |
| London Borough of Ealing | April 2003 to January 2004 | Full Details |
| EduAction | September 2001 to March 2003 | Full Details |
| Transport for London | January 1999 to August 2001 | Full Details |
| Cazenove & Co | March to December 1998 | Full Details |
| Kodak | January to March 1998 | Full Details |
| ICL PLC - London | April 1997 to January 1998 | Full Details |
| ICL PLC - Elstree | April 1995 to March 1997 | Full Details |
| Centrefile Ltd | September 1989 to April 1995 | |
| Midland Bank | February 1989 to September 1989 | |
| Coopers & Lybrand | August 1988 to February 1989 | |
| Pannell Kerr Forster | February 1986 to July 1988 | |