By my reckoning there are only about 3 or 4 Thames tiles that aren't gettable on terra firma or at low tide between Syon House until you get round to the Eastern side of the Isle of Dogs.
The Northern most two between Westminster and Lambeth bridges
The one north of ITV (the one jellybaby's map shows above)
The one West of the Millenium Bridge looks doable at low tide (according to the satellite view on Squadrats).
A couple of others I have (just East of Battersea Power Station) are a bit dubious. Looks like I've got them because I used to commute along the North side of the river and random GPS jitter has pushed some traces over South enough. But the satellite view shows low tide is good enough to get them if access is ok. Similarly the one a bit further East and just North of the Heathwall Pumping Station.
By my reckoning there are only about 3 or 4 Thames tiles that aren't gettable on terra firma or at low tide between Syon House until you get round to the Eastern side of the Isle of Dogs.
The one West of the Millenium Bridge looks doable at low tide (according to the satellite view on Squadrats).
A couple of others I have (just East of Battersea Power Station) are a bit dubious. Looks like I've got them because I used to commute along the North side of the river and random GPS jitter has pushed some traces over South enough. But the satellite view shows low tide is good enough to get them if access is ok. Similarly the one a bit further East and just North of the Heathwall Pumping Station.