This is rather odd - I noticed recently that various street names and places in London are being labelled in Japanese (Katakana) on Google Maps (on maps.google.co.uk).
For example, Vauxhall:
I found mention of the same issue on this local forum from a few weeks ago (for Southwark station in that case).
Is this an experimental feature that I've got enabled by mistake?
Is is possible to switch it off?