13th February 2013 → 27th April 2013 of Coalition for Reforms & Democracy
8th February 2013 → 27th April 2013 of Wiper democratic Movement Kenya
27th March 2012 → 21st March 2013 of Cabinet
2012 → 4th March 2013 for Makueni of REPUBLIC OF KENYA
2008 → 4th March 2013 for Mbooni
2007 → 8th February 2013 for Mbooni of Orange Democratic Movement Party Of Kenya
2009 → 26th March 2012 of Cabinet
2008 → 2009 of Cabinet
(Nominated)
2003 → 2007
1991 → 27th April 2013 of Africa committee of international litigation
2008 → January 2013 of Committee on Powers and Privileges - (National Assembly Powers and Privileges Act)
2008 → January 2013 of House Business Committee
1993 → 27th April 2013 of Kenya Airways
1991 → 27th April 2013 of Africa committee of international litigation
1980 → 27th April 2013 of International bar association
1976 → 27th April 2013 of Kilonzo & company advocates
1975 → 27th April 2013 of High Court of Kenya
Ended 27th April 2013 of Kyumba holdins ltd
1984 → 1993 of Rotary international
1986 → 1987 of Rotary club of Nairobi north association
1983 → 1985 of Law Society of Kenya
(Diploma )
1974 → 1975 of Kenya School of Law
(B LLB (Hons))
1971 → 1975 of University of Dar-es-Salaam
1965 → 1970 of Machakos High School
1961 → 1964 of Mbooni Intermediate School
1956 → 1960 of Utangwa A.I.C primary school