Demonstrators
| Name | Duration of Work | Current Status |
| Dr.H.A.P.Darmawardena | 15/08/2001-14/02/2002 | |
| Dr.B.A.R.K.Gunasena | 15/01/2002-14/07/2002 | |
| Dr.L.D.R.A.Perera | 01/08/2002-31/01/2003 | |
| Dr.D.D.W.G.Karunarathne | 03/02/2003-02/08/2003 | |
| Dr.N.Abesiriwardena | 01/08/2002-31/01/2004 | |
| Dr.K.H.L.Fernando | 01/08/2002-31/01/2004 | |
| Dr.U.K.P.Samaraweera | 01/08/2002-31/01/2004 | |
| Dr.G.R.P.B.Darmawardena | 02/06/2003-01/03/2004 | |
| Dr.J.N.Nissanka | 09/07/2007-10/08/2004 | |
| Dr.H.G.W.A.A.K.Bandara | 01/08/2002-31/01/2005 | |
| Dr.T.S.B.Neelawathura | 02/06/2003-01/03/2005 | |
| Dr.C.L.Ranaweera | 01/05/2004-30/04/2005 | |
| Dr.A.K.S.Gomas | 01/05/2005-31/10/2005 | |
| Dr.M.N.J.Gunathilake | 01/05/2005-31/10/2005 | |
| Dr.H.P.Hettiarachchi | 01/02/2006-31/10/2006 | |
| Dr.H.M.N.C.Herath | 01/02/2006-31/10/2006 | |
| Dr.R.G.G.S.Kumari | 16/10/2006-30/06/2007 | |
| Dr.U.E.Senanayake | 01/01/2008-30/04/2008 | |
| Dr.W.L.S.Dias | 16/10/2006-30/06/2008 | |
| Dr.A.S.D.Nandasiri | 02/06/2008-11/07/2008 | |
| Dr.D.T.D.Warnakulasuriya | 02/06/2008-11/07/2008 | |
| Dr.R.A.D.C.P.Ranasinghe | 02/05/2008-01/11/2008 | |
| Dr.W.D.J.K.Amarasena | 02/08/2009-31/10/2009 | |
| Dr.B.M.Dayananda | 02/05/2008-01/11/2009 | |
| Dr.W.R.A.D.T.D.Rathnayake | 03/11/2009-02/05/2010 | |
| Dr.I.D.J.C.Ranathunga | 03/11/2009-02/05/2010 | |
| Dr.I.K.S.T.Wellagiriya | 02/08/2009-31/10/2010 | |
| Dr.A.A.S.Sihanadan | 03/11/2010-02/11/2011 | |
| Dr.B.A.A.R.Bulathsinghela | 03/11/2010-02/11/2011 | |
| Dr.J.A.D.R.C.Ranasinghe | 20/09/2011-02/11/2011 | |
| Dr.K.A.S.Bandara | 20/09/2011-12/02/2011 | |
| Dr.L.B.P.P.Rathnayake | 01/02/2012-31/01/2013 | |
| Dr.N.M.Perera | 01/02/2012-31/01/2013 | |
| Dr.U.D.Senarathne | 01/01/2013-31/12/2013 | |
| Dr.E.M.D.P.Ekanayake | 01/01/2013-30/06/2013 | |
| Dr.S.S.Liyanage | 16/05/2013-15/12/2013 | |
| Dr.H.D.M.Nadeeshani | 17/02/2014-16/02/2015 | |
| Dr.D.U.A.A.De Silva | 17/02/2014-16/02/2015 | |
| Dr.W.I.R.E.A.Fernando | 15/12/2014-14/06/2015 | |
| Dr.W.S.K.C.Fernado | 02/02/2015-01/08/2015 | |
| Dr.Pavithra.R.Wijesinghe | 01/07/2015-31/12/2015 | |
| Dr.Anton Fernando | 01/07/2015-31/12/2015 | |
| Dr. A.G.R.K.Bandara | 01/02/2016-30/05/2016 | |
| Dr.W.A.S.Harshana | 01/02/2016-13/05/2016 | |
| Dr. Dilini Jayathilake | 13/05/2016-31/10/2016 | |
| Dr. Savithri Jinadasa | 13/05/2016-31/10/2016 | |
| Dr. P.M.S.Samaranayake | 01/02/2017-07/06/2017 | |
| Dr. A.A.B.S. Perera | 01/02/2017-09/11/2017 | |
| Dr. S.S. Paranavithana | 01/07/2017-09/11/2017 | |
| Dr. W.D. Kithmini Ganga | 02/01/2018-31/05/2018 | |
| Ms T.A.A.W.Senanayake | 02/07/2018-01/07/2020 | |
| Ms M.K.J.K.Kumari | 19/07/2018-15/07/2020 | |
| Dr. B.D.A. Senivirathne | 13/07/2020-06/10/2020 | |
| Dr. M.A.U. Prageeth | 13/07/2020-07/10/2020 | |
| D.L. Kulathunge | 12/10/2020-03/06/2021 | |
| A.M.S.N.P. Aththanayake | 12/11/2020-19/02/2021 | |
| Chamika Deshamani | 22/02/2021-16/04/2021 | |
| G.D.P. Samudini | 11/05/2021-15/10/2021 | |
| D.N. Alwis | 04/06/2021-14/10/2021 | |
| J.M.Y.K.Jayasinghe | 15/10/2021-15/06/2022 | |
| J.A.G.K.Jayasinghe | 15/10/2021-15/06/2022 | |
| D.M.C.B.Dissanayake | 19/07/2018-15/07/2020 | |
| R.T.Jayathilaka | 13/07/2020-06/10/2020 | |
| W.A.C.J.Hangilipola | 25/10/2022-24/06/2023 | |
| A.D.Wijesinghe | 25/10/2022-09/01/2023 | |
| W.G.S.R.Thilakarathna | 16/01/2023 | |
| M.T.K.L.Thudugala | 26/06/2023 |