Hi!

1. Could I ask you to provide proper changeset comments?  "Accuracy updates" doesn't really tell anyone anything.  Ideally, some combination of why you made the edits, what you changed, and what your source was (e.g. survey, aerial imagery, etc.).  When you save your changeset, you can also select "Sources" in the "Add fields" box, which will allow you to record your sources.  See https://wiki.openstreetmap.org/wiki/Good_changeset_comments#Why_should_I_use_Changeset_Comments?
2. In this changeset, at the roundabout next to Boulton Drive, the node for Boulton Drive entrance/exit was merged with the Rose Kiln Lane exit.  Different exits/entrances should have separate nodes, see https://wiki.openstreetmap.org/wiki/Tag:junction%3Droundabout#Connecting_ways ("Do not directly connect approaching with departing roads").  I've split the nodes now.
3. If you're interested in improving the alignment of roads etc., you should look at using the OSMUK Cadastral Parcels layer https://osmuk.org/cadastral-parcels/ as this provides lines that are perfectly aligned, making it easier to align the aerial imagery (I tend to use walls/fences in housing estates for the alignment).

Jon