Brown Dog and Brown Cow

So, in the morning, the engine purred into life. We set off and reached Denham where we stopped for lunch. 

After lunch the boat would not start.

So instead of a nice night in a waterside pub about three miles away we improvised on board. I took Brown Dog on a walk in a nearby "country" park-Dog and cow were intrigued. 

The extra is of another box- brick built all around with no door or openings.  No idea of its function other than to attract graffiti.