B&M Retail's Simon, Bobby and Robin Arora are £350m up at £1.75bn. B&M is expanding its gardening offer. Home and garden discount chain The Range's Chris Dawson is worth £1.65bn accoriding to the list.
Wyevale Garden centre's owner Terra Firma's Guy Hands, along with his wife Julia, are rated at £265m, up £15m.
Haskins' Warren Haskins is valued at £115m after selling his Hobbycraft chain in 2010 for £100m. Haskins is seeking two more garden centre sites to add to its current four.
Edinburgh Woollen Mill's Philip Day is ranked equal 145th at £750m. EWM plans to open 100 stores over the next two years and has more than 60 concessions in garden centres.
Former Wyevale Garden Centres owner Sir Tom Hunter is 208th in the list at £529m.
Jamie and Jools Oliver are valued at £180m.
Other discount store owners such as Poundstretcher's Rashid and Azuz Taub (£170m), Trago Mills' Bruce Robertson is listed at £120m.
Focus co-founders Bill Archer (£125m) and Greg Stanley (£115m) are also listed.