Geraint's family has been in Swansea for five generations, with his father's family being from Aberystwyth. He lives in Swansea, with his children in a local school and the college. After a state comprehensive education he gained a place to read Mathematics at Oxford University. He switched to Philosophy, Politics and Economics graduating from Jesus College where he was elected as student President.
Geraint joined Unilever as a Group Product Manager in 1982, and later worked for Colgate-Palmolive as Marketing Manager before starting his own companies, including Pure Crete. He became active in the Labour Party and joined the GMB in 1985. He has been a member of the Co-operative Party since 1984.
Geraint was elected to Croydon Borough Council in 1986. When Labour won control of Croydon Borough Council in the 1994 election, Geraint became Chairman of the Housing Committee, and in 1996 was chosen as Leader of the Council. At the 1987 General Election, Geraint contested the Croydon South constituency, where he increased the Labour vote by a third. In 1992, he stood in another Conservative safe seat - Croydon Central, where he reduced a large Conservative majority. At the 1997 election, he overturned the Conservative majority and was elected as Croydon Central’s MP. He was re-elected in 2001 with 47.2% of the vote. At the 2005 election the Conservative candidate gained the Croydon Central seat with a majority of 75 votes.
Geraint's Move Back to Swansea
Geraint returned to Swansea in 2005 with his family. He was appointed by the Environment Agency Wales and the Welsh Assembly Government to lead a team protecting Wales from flood risks, and other issues caused by climate change. As Chair of Flood Risk Management Wales he headed a strategic team investing in flood defences through the Environment Agency Wales. He also chaired the Labour Finance and Industry Group Wales.
Geraint was selected as the Labour candidate for Swansea West following the announcement of the retirement of the constituency’s MP of 45 years, Alan Williams. In the General Election of May 2010, Geraint won the seat with just 504 votes. In 2015, after 5 years of representing Swansea West in Parliament, Geraint was endorsed by the people of Swansea with an increased majority of over 7,000 votes.