In "retirement" Burt took on the role of an appliance store owner in Roy Clarke's Last of the Summer Wine. That nonsensical Britcom where all the Great British comedic actors retire to. The only not so funny thing about it was that when you didn't see one for a while, you realized that he/she had gone into "permanent" retirement.
He also appeared in three James Bond movies -- usually as a villain's assistant or collaborator. In "Goldfinger" (1964), Kwouk played Chinese agent Pan Ling, a key figure in the diabolical plot to debilitate Fort Knox. He also appeared in "You Only Live Twice" (1967) and the Bond spoof "Casino Royale" (1967).
Kwouk and Gert Fröbe hatch a nefarious plan involving Fort Knox in "Goldfinger" (1964)
Burt's character, "Electrical Entwistle", was central because he was the one who had the vehicle, his appliance store truck, for all the senior citizens' escapades. Also, he was always trying to sell one of his appliances, but rarely getting any takers.
Last of the Summer Wine ended in 2010; it is the longest running comedy program in the UK and the longest running sitcom in the world.
Burt was awarded the OBE in 2011.