Not that long ago, you will recall, David Walliams swam the length of the Thames to raise money for charity – and promptly became rather ill from swallowing river water that had been polluted by sewage.
The thing about owning a boat on the Thames is that, just occasionally, there’s a desire to venture to pastures new. To cast off from one’s home mooring and head off into the unknown (well, almost unknown, anyway).
