Lady Jennifer Gretton, as Lord-Lieutenant, is the official representative of Her Majesty The Queen for the County and City of Leicester, and was appointed on 1 February 2003.

On 24 February 2003 Lady Gretton was appointed Chairman of the Lord Chancellor's Advisory Committees on Justices of the Peace and General Commissioners of Income Tax, and a Justice of the Peace and Keeper of the Rolls for Leicestershire.

Lady Gretton (Jennifer Ann) was born on 14th June 1943 at St Ives, Cornwall. She is the widow of the Third Baron Gretton, with whom she had a son and daughter. Her granddaughter was born in July 2002 and grandson in October 2003.

Lady Gretton has been running the Stapleford Estate near Melton Mowbray since the death of her husband in 1989. In the same year she was appointed to the Leicestershire and Rutland Country Landowners Association Committee, the Student Affairs Committee and Advisory Council at Harlaxton Manor (the British Campus of the University of Evansville) and President of the Melton Mowbray and District Model Engineering Society. She served on the Country Landowners Association Environment and Water Committee at national level from 1994 -1998. In 1994 she was appointed President of the Leicestershire and Rutland Rural Community Council and in 1999 President of LOROS (the Leicestershire and Rutland Organisation for the Relief of Suffering). In 2001 she was appointed a Deputy Lieutenant of Leicestershire.

Lady Gretton has been a Member of the Committee of Somerby Parochial Church Council since 1991, Church Warden of All Saints Church Somerby 1992-1995, and is a Member of the newly formed Leicester Cathedral Council in 2003.

She is Patron of St Mary's Appeal, Melton Mowbray and six Parishes. Lady Gretton is interested in sport, especially tennis when she has the time, and music, singing with the Oakham School Choral Society. She is interested in all aspects of steam, and restored the Stapleford Miniature Railway with the help of volunteers, and instigated the Stapleford Steam Rally in 1996.