Many of Dublin's Leyland Olympians crossed the Irish Sea after withdrawal by Dublin. Ensign Bus of Purfleet handled many of their UK sales. They went to operators scattered all over, including a number in the old London Country Area. If you want a comprehensive look at the class and their disposals, visit Dick Gilbert's page of Dublin Bus Olympians. Here I shall only look at the "wider London" examples.
TrustlineTrustline, then at Hunsdon near Ware, had a serious railway replacement bus business that required a stream of good quality inexpensive buses. The ex-Dublin OLympians fitted the bill and in 2007 Trustline acquired three from Ensign's. They looked good in Trustline's cheerful red, blue and yellow livery.
They returned to Ensign in August 2008, but whether that was LEZ-related or due to changes in the rail replacement business I do not know.
Railway duty at St.Albans, 12th January 2008: H721PVW and J820CEV were both deputising for Thameslink trains on the Midland Main Line, a perennial weekend task.
Z&S, AylesburyZ&S of Aylesbury also acquired three during 2007, although one was soon returned to Ensigns before going off to Dunn Line in Nottingham. The two keepers have settled, and after a period running in tired Dublin livery have been repainted in the house colours of red and cream.
Also on railway duty at St.Albans, 12th January 2008: J765CEV, still in Dublin livery, makes a pickup at City Station.
Red Line, Aylesbury..acquired one of Dublin's earliest retirees after it had seen UK service with Redby in Sunderland and Talisman of Great Bromley. H643 PTW arrived with Redline in February 2005.
WiltaxThe Surrey rail replacement specialist company also had one: H155PVW was acquired in December 2006. Wiltax was taken over by Tellings Golden Miller, part of the Arriva group, and was dismembered, H155PVW being despatched to Burton's in Colchester.