these web pages
Problem with possibly missing PROW near to BM/FAW/14/1 and ON/130/18/10
A map is shown below. The underlying map is an Ordnance Survey 1:25000 map that has been produced by Bing. On the underlying map, public rights of way (PROW) are indicated by dashed green lines. Solid lines have been superimposed on top of the underlying map (and will usually hide these dashed green lines). A solid red line signifies a footpath, a solid magenta line signfies a bridleway, a solid green line signifies a restricted byway and a solid blue line signifies a byway open to all traffic (BOAT). These solid lines have been produced from data obtained from the Council of Buckinghamshire (BM) and from the Council of Oxfordshire (ON). You can click on a solid line to get more details about that PROW. You can click on the + and - buttons to zoom in/out.
There's possibly a PROW that lies along the boundary between Buckinghamshire and Oxfordshire which is missing from the datasets provided by the councils of Buckinghamshire and Oxfordshire. The map below shows that the PROW is the online 1:25000 mapping provided by the Ordnance Survey. It also appears on the OS Explorer Map 171 "(Revised 1999; revised for selected change 2005; Crown copyright 2006)". However, I don't think it is on the Ordnance Survey's online 1:50000 mapping and there's no real evidence on the ground that there is a path.
The possibly missing PROW runs from the B480 to the junction of BM/FAW/14/1 and ON/130/18/10 (which is at the "BS" on the right-hand side of the map).
I guess that Oxfordshire reckon this possibly missing PROW is in Buckinghamshire. This seems to be confirmed by the online map of SU78NW that is provided by Oxfordshire. I've also looked at the online map provided by Buckinghamshire and the possibly missing PROW is missing from that map too. This area is in postcode RG9 6BG.
When I visited the area on June 13th 2016, there was no real evidence on the ground that there is a path.
The W end of the possible path would be near to the hedge (in the first photo)
but there is no obvious way to get to the B480 which lies behind
The second photo shows that,
slightly further S,
there is a gap in the hedge but it doesn't look as if it's been used
and there's a significant jump down to the road (about 5 feet).