We had a packed agenda on this 3-day London trip, but as luck would have it, there was a two hour window of free time on Saturday morning. It was just enough time to hop a Hammersmith & City Line train at Shepherd’s Bush Market, next to our hotel, and ride it to Hammersmith, where we picked up the bus to Mortlake. I wanted to visit the grave of one of my travel heroes, the explorer Richard...








