It's not often I come across a bollard with a 'nut' shaped base and it's certainly very odd to find an actual 'bollard' that has cracked at the base of the column.
The 'bollard' has more than likely been struck by a motor vehicle van/lorry type has Carrington Street is very narrow and only actually leads to a rather expensive but very clean/well kept underground car park.
This fine but simple looking 'bollard' certainly needs closer inspection to try and gauge if it is something more than a common/bog standard bollard. The flared end certainly has the look of a 'cannon' but the nut shape base plate does not.
Bollards of London...
PS we're back after a short break from blogging/posting.