According to #surveyme there should be a postbox (CR5 383) around this location. I could not locate it in my survey of 2019-04-06. From reviewing streetlevel imagery, I can see it in imagery from some years ago but it seems to have disappeared in more recent years.

According to #surveyme there should be a lamp style postbox around this location, ref KT20 110. I passed by the area twice and couldn't see it.