From time to time, BT used non standard kiosks, often boxes were built into buildings. Here are some of the survivors and other oddities.

Chancellor Passage, London
Chelmorton, Derbyshire
China Town, London, removed
Farnham, Hampshire, removed

North Berwick PO, Berwickshire
St Peter Port, Guernsey
Sandwich, Kent

Guiting Power, Gloucestershire
Coln St Aldwyns, Gloucestershire
Bishop's Stortford, Hertfordshire
Enniskerry, County Wicklow
Disused Interphone unit still in situ in Lewisham High Street
Royal Bath Hotel, Bournemouth

Hambleden, Buckinghamshire