As Pax, I landed 5 five minutes before this on SA 234 ex Jo'burg. That is of no direct relevance, other than it makes me particularly interested in the outcome of this incident.
Mad (Flt) has it exactly right. Why was the BA flight not delayed and checked? It must have been obvious that there was a potential security and safety issue. Is there no immediate reporting system for such an event? Or was the security guy just too intimidated by the prospect of delaying the flight?
And Mr JW411 - you really do need to grow up.