Lawrence, having twice unsuccessfully stood for the Peckham constituency in 1966 and 1970, was elected MP for Burton in February 1974. He held the seat until May 1997 when he lost to Labour'sJanet Dean. He was a member of the Conservative Monday Club in 1973 when in the Autumn of that year he had contributed an article to Monday News on the subject of "The Problem of State Subsidised Strikers". He is listed as a Club MP in May 1975, in a Club office list as one of their MP members in July 1976, and in a Club members' circular as one of its members standing for re-election to Parliament for Burton in the General Election on 9 June 1983. He was still on the List of Club M.P.s in 1990. He has also been a member of the Conservative Bow Group for over 50 years and has contributed to many of its publications over that period. He was Chairman of the Home Affairs Select Committee from 1992 to 1997 and was Chairman of the Commonwealth Parliamentary Association from 1995 to 1997. He was a member of the Foreign Affairs Select Committee from 1982 to 1992, and served on a number of other Parliamentary Committees concerned with health, employment, social services and law and order. He was chairman of the Conservative Friends of Israel and was a member of the executive committee of the 1922 Committee for a number of years. His Private Members Bill in 1991 instigated the national lottery, and in 1985 he made the longest speech in Parliament that century.
Post-parliamentary career
Lawrence is now a member of 5 Pump Court Chambers, a Fellow of the Society for Advanced Legal Studies, was an elected member of the Bar Council and is Visiting Professor of Law at the University of Buckingham. He was admitted to the degree of Doctor of Laws "Honoris Causa" by the University in March 2013. In April 2015, he became a Visiting-Professor at the BPP University Law School. He is well known as an after-dinner and cruise-line speaker. His memoir, "My Life of Crime: cases and causes", was published by Book Guild on 30 September 2010 and reprinted in paper-back on 1 February 2012. He is a vice-president of the Society of Conservative Lawyers, President of the Spelthorne constituency Conservative Association, a deputy for the Board of Deputies of British Jews for 40 years, and was a trustee of the Holocaust Educational Trust.
Personal life
He married Gloria, whom he had met at the Oxford University Progressive Jewish Society, at the West London Synagogue in April 1966. She died of brain cancer, following terminal lung cancer, on 4 October 2016. They had one daughter, Rachel Lawrence, a criminal barrister for 21 years, an amateur actress, pianist, former CF Achiever of the Year and even once appeared on ITV's Blind Date. She died of lung failure caused by cystic fibrosis aged 45 years on 6 September 2013.