The RFs were magnificent buses.....a joy to watch, listen to and ride on. Sadly my local route at that time - 227 (Crystal Palace & Chislehurst Gordon Arms) - succumbed to SMS buses in the first week of January 1971. The replacement vehicles were 'interesting', too, but unfortunately for entirely different reasons.....
My RF route, too. Along with Green Line 72?5?4?. Now reintroduced somewhat as SuperLoop SL3. A marvellous very well-used new service fro Bromley to East Croydon via Bethlem Royal Hospital.