I appreciate that the surface data is very basic, albeit sufficient for recognising basic features when flying, but I seem to have spotted a new road that isn't actually there.

It is in Cambridgeshire, a dual carriageway that starts midway twixt Cambridge and Huntingdon (A14) and goes almost directly west before curving northwards to join the A1.

It passes about a mile north of Main Hall Farm and is potentially very misleading. Anyone having local knowledge, please correct me if I'm wrong, but I drove along the A14A1 to Peterborough from the Cambridge side last week and do not recollect a new junction along that stretch.

SD and a cheap Chinese satnav = Jobzagoodun.

Have you tried viewing it on google to check it out, I'm sure you know how to, but just in case, right click the location on the chart and then 'view in google' You will then be able to get the map reference to help Tim identify it better