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The allocation was transferred to London Country Bus Services' Watford garage, and became part of London Country North West in 1986. It was included in the sale of the business to Luton & District in October 1990 and retained the contract shortly afterwards, ordering 15 new Leyland Olympians to operate the route. The route was retained again in 1995, making it the first route to be retained by its existing operator through two consecutive retenders.
When re-tendered, it was retained by Arriva The Shires with new contracts commencing on 5 January 2008 and 5 January 2013.