(Of course, rideeverytile.com only has the data from people who join the right Strava group, it isn't everyone who does tile bagging.)
But I'm guessing some of those tiles were grabbed by people on the water (canoe/kayak/etc).
My own long term plan is to get every tile within the M25 so that was going to be my target. The furthest East I've got covering the river is only the Woolwich ferry, but then I'm SW London based - I'm only 2 tiles missing from covering the Thames all the way to Marlow.)
I've always wanted to go having seen so many of their "RAINHAM STEEL" adverts at football grounds over the years which I can only assume are from the Rainham tourist board.
Maybe I'll get a nice pint of Gazprom if I find a nice pub there.
According to https://rideeverytile.com/tiles/heatmap it starts to dry up just East of East Tilbury.
(Of course, rideeverytile.com only has the data from people who join the right Strava group, it isn't everyone who does tile bagging.)
But I'm guessing some of those tiles were grabbed by people on the water (canoe/kayak/etc).
My own long term plan is to get every tile within the M25 so that was going to be my target. The furthest East I've got covering the river is only the Woolwich ferry, but then I'm SW London based - I'm only 2 tiles missing from covering the Thames all the way to Marlow.)