London house (level 11) is also the home of mining corporate,Their MD is Steven Brockhurst who is JKAs secretary...
The last AGM was hosted in the "mining corporate boardroom" therefore I would hazard a guess that JKA may not be recognized as the official tenants in London House hence not on the tenants list....
FYI mining corporate do not appear on the tenants listing however, their website is worth a visit....
www.miningcorporate.com.au