Lock 45 and Adjacent Dry Dock Grand Union Canal

Lock 45 and the adjacent dry dock on the Grand Union Canal were constructed around 1800, with the dry dock built as a narrow duplicate lock between 1838 and 1839, later altered in the 19th century. The structure features brick retaining walls topped with stone coping. The main lock includes two pairs of gates equipped with sluices and winding gear, with the quoins dated 1859 and 1864. There are brick steps at the west end, along with one cast iron bollard and one wooden bollard. The lock also has a pair of side ponds with winding gear dated 1865. The dry dock is fitted with a pair of gates at the east end and has one cast iron bollard near the entrance. It is covered by a shed made of brown brick with blue brick below the openings and a slate roof. The side facing the canal has blind window panels at each end and six louvred windows with segmental heads. The west end features a central door flanked by windows with semi-circular heads, along with a bank tablet in the gable. The east end has a large opening with board doors.