Ever wondered Thames side?

Walking down river from Kingston to Ham House.

I've spotted it.

What a fine house.  

The first crossing point I got to .

This is the PLA boundary marker.

This is the marker https://en.wikipedia.org/wiki/Port_of_London_Authority between the Port of London Authority and The Inland Waterways Association.  It's where the tidal reach of the 
Thames is said to end.  I questioned this because I knew that there is a lock at Richmond.  However having read 
 http://www.pla.co.uk/About-Us/Richmond-Lock-and-Weir I now learn that this is a temporary lock that comes is taken out of uses twice a day. The tide continues to have an influence up to Teddington.

The weir at Teddington.  A wonderful thing to observe.

The sounds of the walk - Green ring necked Parakeets.