sentences:  On 25 January 2017, the "Watford Observer" newspaper confirmed that work which had been ongoing since 2014 had stopped as there was an ongoing funding issue; Transport for London were stating that more than £50m additional funding was required.A Freedom of Information request revealed that £130m of the £284m funding had already been spent, but the only works that had actually been delivered were some utility diversions and route clearance.In September 2017, Sadiq Khan, the Mayor of London, gave more clarity to the issue, relieving Transport for London of any obligation imposed on it by the previous Mayor, Boris Johnson, to fund a cost overrun.