Across the globe, spies gather in inconspicuous dens, where they meet contacts and hold discreet conversations. This week, Intelligence Online tiptoes through the lounges of the Travellers Club, a historic venue on the grand Pall Mall.
There is no sign by the entrance: in the heart of the City of Westminster, 106 Pall Mall is not an eye-catching address. Only once the visitor has got past the front door will he see the place's name emblazoned on a golden plaque. After all, the Travellers Club needs nothing to raise its profile: everyone knows it - everyone, that is, who is an international