Joseph Swan and Thomas Edison had both been involved in the development of electric lighting, from different sides of the Atlantic and with a degree of rivalry (Archive, PE December).
Even so, a joint enterprise called the Edison and Swan Electric Light Company was set up in 1883, and it had an office in London. It was a couple of years before the Savoy Theatre in London became the first public building to be electrically lit. The performance of the lights at the Savoy was as expected but the generator turned out to be inadequate and was replaced.
It is noted in the article that Swan became a member of the IMechE in 1884. At that time the IMechE existed alongside the Society of Telegraph Engineers and Electricians, which in 1889 became the Institution of Electrical Engineers.
J C Jones, Aberdeen