Keepright: Canning Road does intersect the Greenway (http://www.geograph.org.uk/photo/2257389) so removed layer=1. It is indeed higher than the surrounding industrial buildings, but they're not mapped so the layer tag is not needed.

Keepright: removed scribble.

Tagged landuse from Bing plus earlier surveys.

Keepright: this 800m straight-line footway doesn't correspond to any feature on the ground, removed it.

Keepright: tweaked bridge position a tiny bit to match riverbank. (Bing confirms)

Keepright: adjusted service road from Bing. (Aerial photo broadly matches what's mapped, except for the very southernmost part of the road which was a bit off and not joined up)

Keepright: adjusted service road from Bing. (I surveyed it originally and it was very approximate.)

Keepright: Bing shows this unclosed untagged way was probably meant to be a building.

Keepright: fixed intersection. (Bing confirms)

Keepright: these do intersect on the ground (Bing plus local knowledge), so mapped as intersection plus turn restrictions.

Fixed name: it is Carpenters Road, as we already use elsewhere. (Local knowledge and earlier surveys)

Keepright: these do intersect on the ground (Bing plus local knowledge), so mapped as intersection plus turn restrictions.

Keepright: these do intersect on the ground (Bing plus local knowledge), so mapped as intersection with turn restrictions.

Keepright: tagged bridge. (Bing confirms)

Keepright: this mysterious 'greenery along the green way' can become a vague blob rather than a zero-area triangle.

Keepright: traced service roads from Bing. There is some risk the photos are out of date, but this is consistent with what's already mapped.

Keepright: since this is a waterway=drain, and a drain is always at ground level or below, and finally because of Bing imagery, tag layer=-1 to go below roads.

Keepright: this 'Bridge F02' should be tagged bridge=yes.

Keepright: fixed intersection. (Bing confirms)

Keepright: added church info. Partly by matching photo to aerial photo.