185 Park Street

I wonder if anyone can shed any light on what happens here. All that I can find on the internet is stuff about the old proposal to build a 24-storey structure there. But what's the current use of this site? I walk past it often, see people going in and out, and am curious to know more.

185 Park Street is now occupied by a number of companies -e.g. AFAQ-EAQA, but years ago it was the (electricity) national grid control centre. The central control room part was ostensibly bomb proof.

Thanks.