Completed between 1855 and 1858, Porchester Square was one of the last areas of Bayswater to be built.  The name Porchester comes from one of the Hampshire estates of the Thistlewaites who with only two or three other families had been chief lessees of the Bishop of London’s land in Paddington since before 1750.  
London Plane (Platanus x hispanica), Double Gean (Prunus avium ’Plena’) and Indian Horse Chestnut (Aesculus indica) can be found in this garden.