Interestingly, we quite often find errors in OS Locator this way, at which point we start using the not:name= tag to mark them.

Did you mean to remove the name "Miller Way" in this edit? It broke a match with the Ordnance Survey Locator database: http://ris.dev.openstreetmap.org/oslmusicalchairs/map?osl_id=950796

^name

Did you mean to get rid of the named "Helder Street" in this edit? It's broken a match against Ordnance Survey Locator: http://ris.dev.openstreetmap.org/oslmusicalchairs/map?osl_id=361475

(in osm.org/changeset/29369615)

Ok I've fixed it now.

Did you mean to end up removing the name "Runnymede Close" in this edit? It's broken a match against Ordnance Survey Locator: http://ris.dev.openstreetmap.org/oslmusicalchairs/map?osl_id=868564

Good work.

Consider asking the author of the previous changeset for his source?

Eek, more road-merging resulting in auto-merged-semicolon-separated road names (and refs) breaking OS Locator matches here http://ris.dev.openstreetmap.org/oslmusicalchairs/map?osl_id=890450

Did you mean to switch the name= on Passmore Edwards Court to an addr:housename=? This has broken a match: http://ris.dev.openstreetmap.org/oslmusicalchairs/map?osl_id=907839

According to the previous edit on Barrow Road, "Road was renamed from Barrow Road to Abbey Road" (osm.org/changeset/21183173) and this edit now disagrees with Ordnance Survey Locator (http://ris.dev.openstreetmap.org/oslmusicalchairs/map?osl_id=19772). Are you sure this is right?

Did you mean to delete Cottam Hall Lane in this edit? http://ris.dev.openstreetmap.org/oslmusicalchairs/map?osl_id=204564

Are you sure about this edit? It disagrees with Ordnance Survey Locator which thinks it's called Tun Lane only south of the bend: http://ris.dev.openstreetmap.org/oslmusicalchairs/map?osl_id=810890
"Westoff Lane" has now disappeared.

Are the following roads being demolished/changing name or is this a mistake?

http://ris.dev.openstreetmap.org/oslmusicalchairs/map?osl_id=855050
http://ris.dev.openstreetmap.org/oslmusicalchairs/map?osl_id=81357
http://ris.dev.openstreetmap.org/oslmusicalchairs/map?osl_id=236582

Did you mean to delete Middleton Mews in this changeset? It's now leaving a hole in my QA tool:
http://ris.dev.openstreetmap.org/oslmusicalchairs/map?osl_id=504895

Fun tip - if you select the building and his "s", the editor will square up the edges for you.

These are all really useful edits - remember to make sure footways etc. are actually connected to other ones where it is possible to traverse between them so that e.g. the router can pick them up. Should the steps to the "Acredale" parking lot from Church Place be connected at the parking lot perhaps?

Very good :).

(Caught us out there...)

The Grove -> Fieldhurst Close: are you sure about this? 3 things...
1. OS Locator disagrees with you http://ris.dev.openstreetmap.org/oslmusicalchairs/map?osl_id=742886
2. Fieldhurst Close is the road one down from this one.
3. The road you've assigned the name to is not a close.