| From | To | Body | Committee | |
|---|---|---|---|---|
| 2019 | To date | Chartered Institute of Taxation | Private Client (UK) Committee | Simon McKie |
| 2019 | To date | Chartered Institute of Taxation | Private Client (UK) Committee | Sharon McKie |
| 2019 | To date | Chartered Institute of Taxation | Private Client (International) Committee | Simon McKie |
| 2019 | To date | Chartered Institute of Taxation | Private Client (International) Committee | Sharon McKie |
| 2008 | To date | Society of Trust & Estate Practitioners | Technical Committee | Simon McKie |
| 2007 | 2019 | Chartered Institute of Taxation | Succession Taxes Sub-Committee | Simon McKie |
| 2007 | 2019 | Chartered Institute of Taxation | Succession Taxes Sub-Committee | Sharon McKie |
| 2007 | 2019 | Chartered Institute of Taxation | Capital Gains Tax and Investment Income Sub-Committee | Simon McKie |
| 2007 | 2019 | Chartered Institute of Taxation | Capital Gains Tax and Investment Income Sub-Committee | Sharon McKie |
| 1997 | 2010 | Joint HMRC/Representative Bodies | Tax Law Rewrite Consultative Committee | Simon McKie |
| 2002 | 2006 | ICAEW’s Faculty of Taxation | Stamp Duties Working Party (Chairman) | Sharon McKie |
| 1994 | 2006 | ICAEW’s Faculty of Taxation | Member of the Technical Committee | Simon McKie |
| 1990 | 2007 | Chartered Institute of Taxation | Capital Taxes Sub-Committee (Chairman 2001-2005) | Simon McKie |
| 1998 | 2007 | Chartered Institute of Taxation | Capital Taxes Sub-Committee (not Chairman) | Sharon McKie |
| 2001 | 2005 | Chartered Institute of Taxation | Member of the Technical Committee | Simon McKie |
| 2001 | 2005 | Chartered Institute of Taxation | Tax Policy Committee | Simon McKie |
| 1994 | 2005 | ICAEW’s Faculty of Taxation | Inheritance Tax and Trusts Committee (Chairman 1998-2005) | Simon McKie |
| 1994 | 2005 | ICAEW’s Faculty of Taxation | Inheritance Tax and Trusts Committee (not Chairman) | Sharon McKie |
| 2002 | 2005 | ICAEW’s Faculty of Taxation | Learned Society Committee | Simon McKie |
| 1999 | 2004 | ICAEW’s Faculty of Taxation | Blueprint Committee | Simon McKie |
| 1992 | 2004 | ICAEW’s Faculty of Taxation | Governing Committee (Chairman 1995-1997) | Simon McKie |
| 1998 | 2001 | Institute of Chartered Accountants in England and Wales | Governing Council | Simon McKie |
| 1994 | 1995 | ICAEW’s Faculty of Taxation | Professional Matters Committee (Chairman) | Simon McKie |
