Not common or likely, but British High Commission workers/diplomats have been murdered in the past , imo, speculation, fwiw, imo.
Assassination of Sir Henry Gurney - Wikipedia
''The
Assassination of Sir Henry Gurney took place at the height of the
Malayan Emergency. The British High Commissioner was killed by members of the
Malayan Communist Party at Mile 56 ½, Kuala Kubu Road on 7 October 1951, on his way to
Fraser's Hill for a meeting.
[1][2]''
Death sentence for British embassy worker's killer
''Nov 2019
Ms Dykes had been working for the Department for International Development since January 2017, helping Lebanon to cope with the influx of refugees from the war in neighbouring Syria.
She had reportedly been due to fly home to the UK for Christmas
But she was abducted after leaving a bar in the popular Gemmayzeh district of Beirut where she went for a colleague's leaving party.''
BRITISH DIPLOMAT IN INDIA IS SLAIN ON WAY TO HIS OFFICE IN BOMBAY
1984
''The British Deputy High Commissioner for western India was shot and killed today by two unidentified assailants as he was being driven to his office in downtown Bombay, the police said.
The diplomat, Percy Norris, was shot at close range as his car slowed near a traffic junction about a quarter- mile from his office, according to the Bombay Police Commissioner, Julio Rebeiro.''