This picture shows the two trolleybuses that Southend Corporation converted to mobile toilets in 1950 and which regularly appeared at events in the town thoughout the fifties and into the sixties - they were sold for scrap in 1967.
On the left is ex-Southend 116, JN2086, an AEC 663T new in 1930, while on the right is ex-Bournemouth 69, LJ7702, also an AEC663T which entered service in May 1933 - it was converted to a petrol bus by Bournemouth in 1936.

Click here for fleet details of 116.