Despite being the former Chief Concorde Pilot, and having thousands of hours flying at 60,000 feet, I hate heights!  I can't even climb a house ladder and don't go up a step ladder without shivering. 

So this is it.  I’m not putting it off any longer.  Chris and I are taking the DofE Diamond Challenge.  We're going to walk over the roof of The Millennium Dome. 

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