Luxury food supplier Fortnum and Mason opened a second shop on Friday after 307 years of operation.
The company famous for foie gras and caviar sold from its historic Piccadilly premises has opened a 200-square-metre branch at St Pancras international rail station.
The new shop in the St Pancras undercroft, formerly used for storing Bass Burton beers, will include a tea salon as well as offering a selection of Fortnum and Mason products.
"The transformation of King's Cross from insalubrious corner of London into international gateway and home to some of the capital's most creative businesses and organisations is impressive," Ewan Venters, Fortnum and Mason chief executive, said.
"Fortnum and Mason has been famous for servicing the needs of travellers and explorers since the early 18th century, and we look forward to doing this for the next three hundred years from our new home in St Pancras," he said.
As well as stilton cheese, smoked salmon and so on, the store will sell 18 rare single estate teas and 10 classic blends, supported by tea tastings to help customers understand the range and complexity of the teas on sale, the company said.
Christmas biscuits, mince pies, Christmas puddings, Christmas tea and coffees, Turkish delight, glaces fruits and marrons glaces will all be on sale as the store opens.
Passers-by in the St Pancras undercroft include passengers arriving on Eurostar trains from Paris and Brussels.
Well-known retailers who have already opened branches in the refurbished St Pancras station include Foyles, famous for its rambling bookshop on Tottenham Court Road.