While a Member of the Provincial Parliament, he served as Chairman of the Standing Committee on Public Accounts (SCOPA) and Special Delegate to the National Council of the Provinces.

Grant was born in Camps Bay, a suburb on Cape Towns Atlantic coast, to parents Ron and Felicity.

Grant played another key role in the formation and success of South Africa's first multi-party government - in the City of Cape Town, after no party won a majority.

This MPF block then agreed to work with the DA in a multi-party government (MPG), rather than with the African National Congress/Independent Democrat alliance.

[5] Their success also prompted the DA to ditch its coalition partners including the ACDP, who had helped them become the City government in the first place.

[6] During his term as Executive Deputy Mayor of Cape Town, he was political head of the City's policies and programmes on, inter alia, substance abuse, street people, orphans and vulnerable children (OVC), and international relations, opening South Africa's first municipal-run Outpatient Treatment Centres for substance abuse, and another South African first being a municipal-run toll-free referral helpline for substance abuse.

Grant remained a Councillor in the City of Cape Town until the 18 May 2011 Local Government Elections where he was re-elected to the same post.

In April 2012 the ACDP redeployed him to the WC Provincial Parliament as Member of Provincial Parliament where he was elected Chair of SCOPA (Standing Committee on Public Accounts), a post he held until the 2014 National General Elections when he returned to the City of Cape Town as Councillor and Caucus Leader.

Following the 3 August 2016 Local Government Elections, Grant was re-elected City Councillor and Caucus Leader.