5mb ... the gentleman you are thinking of is Terry.... can't remember his second name, sorry.
As for a visitors office errrr... once again not sure.
NERC tours seem to be back on. I've seen GROUP4 security staff leading curious little flocks of people around the building, spouting forth about how many offices there are, where the sports hall is, what a nice coffee lounge we have etc etc. Their vast encylopaedic knowledge of ATC was then tested by the visitors durring 5 mins in the viewing gallery
Brilliant innit?
BEX