 Although LT had hoped that the electrification would boost revenue , the Chesham branch generated little income . In a period of recession LT was reluctant to continue subsidising a little @-@ used branch line some distance outside its core area . Fares were drastically increased in 1970 , leaving a monthly season ticket from Chesham to Baker Street costing £ 43 ( about £ 600 in 2016 ) . London Transport considered closing the branch , but it survived thanks to subsidies from the Ministry of Transport , Buckinghamshire County Council and the Greater London Council . Sunday services on the branch were abolished as a cost @-@ cutting measure , although this decision was reversed following protests . 
