Remote Controlled Bred Guns ??? Good lord! Don't know if it's been touched on before, but they were controlled from inside from bicycle handlebars - each brake lever operated the Bren for that side!
Remote controlled Bren ? Well what happens when the magazine is all used up ? Remote reload I hope. David
Find cover, get out and reload! There's also the 100 round drum magazine which I imagine would be the preferred magazine for such operation (when fitted, you can't aim using the weapon's sights) http://www.perthregiment.org/rguide2_images/brens/bren02.jpg British BREN 100 Rnd Drum Magazine Set: MK1 WW2 - International Military Antiques
if you go to Defence Images (MOD) you will be able to find a modern update to the remote controlled brens, a couple of years ago the Army carried out trials with remote firing cannons/machine guns, there was a few pictures of them.