"Around 1.5 million of Britain’s 7.2 million lampposts could be removed.... [These] lampposts ... are generally 10m tall on A-roads and 6m tall on residential roads.... The first ones scheduled to be removed are in Hayton, a small Yorkshire village on the A1079 road between York and Hull. Starting in December, 30 street lights on each side of the main road are to be switched off and later removed. Around 300 more will be switched off and removed on a 19-mile (30km) stretch of the road."
"If the trials are successful, this could lead to a total of 1.5 million lampposts being removed from roads across Britain, particularly in rural areas, as they reach the end of their 40-year life cycle. A similar project is under discussion for Derbyshire, and nine other local authorities are also involved including Aberdeenshire, Cambridgeshire and Lancashire.
I guess their utility as junk rig masts may depend on their material, length, diameter, condition, availability, etc. Could this be an opportunity in the future?