Chelsea Bridge is pretty hard to mis-identify as it has the railway bridge to Victoria immediately to the east but the others are much of muchness
he'd have to a long way out to not know where he was approximately
Give it was unlikely that the Shard or any other landmark within 10k was visible above the cloud, so do we assume that the precise turn at London Eye was made via instruments or could there have been breaks in the cloud to make the turn visually?
The track toward Battersea was not over the river, which is a far easier feature to navigate VFR so do we assume this leg was commenced on instruments?
The track is not direct and deviates apparently to avoid overflying Palace?
If so the pilot at that point, had a good understanding of where he was.
Mickjoebill