I think not - the aircraft dumped @ Heathrow for apprentice training was G-ALHJ. (I started work there in June 1970)
On 7 February 1952 HM Queen Elizabeth II arrived at London Airport from East Africa in BOAC Argonaut G-ALHK 'Atalanta' , following the death of her father, King George VI.
I believe HK was scrapped in Denmark in 1965