New off-road NCN 4 under construction between Pontypridd and Tonyrefail

Lots of "HDC" cycle routes around here. These don't appear to be signposted, "HDC" is not a consumer-facing ref in any case, and as far as I can tell they were just taken from leaflets or a defunct website. Just delete them maybe?

I think there's a cycle route here now.

NCN route?

Overlapping cycleway and service road here, needs sorting

New East Coast Greenway route goes this way: https://exploringbybike.com/2021/07/11/we-tested-out-the-east-coast-greenways-new-route-through-northern-new-jersey-heres-what-we-found/

Light industry here demolished and new railway station car park built (not visible on imagery, needs survey)

Now two-way for cyclists: http://www.cityoflondon.gov.uk/services/transport-and-streets/traffic-management/Pages/contra-flow-cycling.aspx

Now two-way for cyclists: http://www.cityoflondon.gov.uk/services/transport-and-streets/traffic-management/Pages/contra-flow-cycling.aspx

NCN is mapped very discontinuously around here - not sure what the real situation is. Sustrans data suggests renumbering to 517 but did this ever happen?