ST 57750 73935 was from an OSGR Android app. I neglected to read the tolerance but it is usually between 3M and 7M, depending on the number of satellites locked-onto. My impression from where I stood was more middle of the length of the street to the bend. Between Goggle & Bing the best fit is where Goggle gives 9 but that can be the other side of the road IME. Bing streetview gave me 42 Whiteladies. The flagstones I refer to were new on my pic and on Bing. Goggle had them with irregular cracks.

I would guess Goggle photos are several years old and the owners decided to re-new the footpath. Luckily the Bench Mark was between cars so the pic shows the two house footpaths. They are the only ones vaguely similar in all renditions. The house number is not that important (which don't read on my Streetview), what is, is the what3words location - cowboy.limit.codes - which uses Goggle Earth and streetview so I can show (hopefully) the location to within 3 Metres. When looking for a strange mark on a kerbstone - even 3 metres can make it difficult.

It is just this depth of puzzle that makes the hunt entertaining. For me anyway.

Thanx 4 the help folks.............