No chance of any visits. Since 9/11 BA along with most other airlines, will only allow flight crew, airline employees and officials from the CAA of FAA on official business into the cockpit during flight. The CAA are also likely to impose even stricter regulations in the near future that will ban anyone other than the operating crew, cabin crew and CAA inspectors accessing the flight deck during flight. The vast mnajority of Pilots are very unhappy about this they have often used the jumpseat to transport family memebrs on trip free of charge. The new regs would prevent this.

What is exceptionally annoying is the hijackers on 9/11 managed to gain access to the cockpit in a country that has had a locked door policy for many years!