The old order at Mill Lane, Islip on 7 September 1991. L410 (51387 & 51345) passes over the little used level crossing with the 2C37 11:57 Bicester Town to Oxford Network SouthEast service. The venerable Class 117 units were replaced by Turbo units the following year, but the road user operated level crossing survived for another couple of decades. With the rebuilding of the line as a through route to London via Bicester, this crossing was permanently closed, and a footbridge provided a short distance to the north.