The Mark III was a portable and fully steerable radio telescope located at Wardle, near Nantwich, Cheshire in the north-west of England.

[1] Constructed in 1966, it was remotely controlled from Jodrell Bank Observatory, and was mainly used as part of the MERLIN radio telescope network.

When the bowl was pointed to the horizon, the structure deformed slightly under gravity, meaning that the telescope becomes 14% efficient at 11 cm.

[3] The focus cabin was an ~8 foot cube, also similar to the Mark II, supported by four steel girders.

Two of the six bogies on which the telescope sat were driven, and motion in elevation was done using two 16-foot (4.9 m) long hydraulic pistons.

As a result, the telescope was built such that it could be completely disassembled and reassembled on a new site within 6 months.