Moser is now the joint 134th richest person in the UK, according to the Sunday Times rich list, up 75 places from last year’s position of 209.
The 68-year-old and his family own all of the finance company after buying back a 30% stake in the company sold to a private equity firm in 2016.
Moser left school at 16 and sold cars in the 1970s with his business partner Barrie Pollock in the 1970s, before setting up the loan firm that became Together.
He remains responsible for the strategic direction of the business, with the lender offering short-term finance, auction finance, personal, commercial and buy-to-let mortgages and secured loans.
Buy-to-let property moguls Judith and Fergus Wilson are also on the list of the 1,000 richest people in the UK, with a worth of £140m and sit in joint position of 836 – down from 793 last year.
The couple sold 400 properties out of 900 in their portfolio in 2016.
Top of the list is Jim Ratcliffe, the owner of chemical firm Ineous – Britain’s biggest privately owned company.
He has a fortune of £21bn, up from £15bn last year.
The rest of the top 10 features Siri and Gopi Hinduja, Sir Len Blavatnik, David and Simon Reuben, Lakshimi Mottal and family, Charelene de Carvalho and Michel de Carvalho, Kirsten and Jorn Rausing, Alisher Usmanov, as well as Guy, George and Galen Jr Weston and family and, the Duke of Westminster and the Grosvenor family.