A sign of the old days - an insulating pot by the line of the Epping Ongar Railway, at the halt at Coopersale.
The Epping Ongar Railway used to be part of the London Underground Central Line, and so was electrified as fourth rail, but was taken over as a heritage service after running a service into rural Essex unsurprisingly failed to make a profit.
<a href="//commons.wikimedia.org/wiki/User:Mattbuck" title="User:Mattbuck"><i>mattbuck</i></a> <small>(<a href="//commons.wikimedia.org/wiki/Category:Images_taken_by_mattbuck" title="Category:Images taken by mattbuck">category</a>)</small>
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<span class="int-own-work" lang="en">Own work</span> by <a href="//commons.wikimedia.org/wiki/User:Mattbuck" title="User:Mattbuck"><i>mattbuck</i></a>.