Jane Simpson is a family lawyer who specialised in complex ancillary relief cases and those involving children. Simpson is a trained marriage guidance counselor and collaborative lawyer. She was the founder and head of the family law department at Manches LLP, a UK law firm, as well as its chairwoman. making her, as of her appointment, one of few women who have led City of London law firms. Jane Simpson was the daughter of Sidney and Judith Manches, the first husband and wife team in the UK to practise law in partnership.