Tidal River Thames - Teddington to Limehouse by Narrowboat

It's our biggest challenge yet, tackling London's Tidal River Thames travelling from Teddington to Limehouse by narrowboat. One of the busiest stretches of river in the UK, the tidal River Thames has huge boats speeding past at up to 30mph and waves of up to 1.5 metres. It's not the safest place for our canal narrowboat! Can we make the 21 miles from Teddington Lock to Limehouse Marina safely and arrive in one piece?