 There was also activity in the single-decker fleet.Some of the AEC Regal IV RFs had been refurbished in the 1960s, with twin headlights, curved windscreens, new side mouldings and improved interiors, mainly allocated to Green Line services.There were 14 Willowbrook bodied AEC Reliances at Hertford garage, which had been bought by London Transport in 1965.