Welcome to the forums m8 another UKer
There are a number of versions of the King Tiger in 1/16th scale that I can think of. There is the static version the Porsche Turret (#36201), there is the motorized version with the Henschel turret (#36204), and there is an RC version with the Henschel turret (#56018)

Alot of people here have the KT so im sure your answers will come shorty as you can see quite a few kt builds going on at the minute in forum
And as knowing a little about rc tanks to a newbie i would say the kt is probally the best tamiya kit in my view you lucky ***!!lol enjoy...[8D]