Around 1760, Philip Booth joined his father John in the family business and in abt 1771, he married Elizabeth Walls, whose father lived – as did Philip – in the new and fashionable Russell Square on the Bedford Estate in Bloomsbury London. Philip and Elizabeth produced seven children, comprising four sons and three daughters, Elizabeth, born 18 July 1773 + William, born 25 July 1774 + John Gillyat, born 17 March 1776 + Mary, born 15 August 1777 + Philip, born 24 November 1778 + Felix, born 16 July 1780 + Alice, born 4 August 1782. In the Directory of Merchants for 1778, when Philip was aged 33, there is the entry of the firm Philip Booth and Company, Distillers, of 55 Turnmill Street in Clerkenwell London. Philip's three sons William, John Gillyat and Felix would join the family business and be groomed as successors. However shortly before Philip's death in 1818, the original family partnership was dissolved and a new one established between the brothers John Gillyat aged 40 and Felix aged 36. Together they had – to a great extent – rebuilt the Turnmill Street premises and it would be Felix who subsequently obtained sole control of the business.