He is a member of the Rajya Sabha, the upper house of the Parliament of India, representing Tamil Nadu for the Dravida Munnetra Kazhagam (DMK).
[2] He was the DMK lawyer in the case for securing burial space on Marina Beach for M Karunanidhi.
In 2002 he was appointed as Additional Central Government Standing Counsel, serving in this post for about three years.
Wilson was appointed as the Senior Central Government Standing Counsel in the Madras High Court in 2005.
[8] Wilson was designated as a Senior Advocate by the Madras High Court in November 2009 at the age of 43.