Lady Hoxton Of Potterbrompton is a minor character in the NPLH universe portrayed by Amy Brunskill. She is a client of Holmes and appears in two Victorian set day shorts "The Disappearance of Lady Hoxtons Hat" (2014) and "Murder at Hoxton Manor". (2014)
The first revolving around a hat she claims to have gone missing (but fails to realise she is wearing it); the second involves a supposed murder in her house, but one she is sketchy about any actual details on.
It is not yet clear whether she is only an attention seeker, or is fact, just plain daft.