Waitrose will this week open its 300th branch in the UK – in Argyll and Bute in Scotland.

The 25,000sq ft Helensburgh shop, which opens on Thursday, will also be the furthest away from the site of the first Waitrose, which opened in Acton, London, in 1904.

“Although our new shop in Helensburgh demonstrates how the scale and ambition of our business has transformed over the decades, the pride in our food and in the distinctive customer service we offer still has its roots in that very first modest business in Acton,” said Waitrose MD Mark Price.

This weekend, Price told the Mail on Sunday his ambition was to triple the size of Waitrose over the next decade to become a £15bn turnover business.

He said the growth of the business would be driven by an annual £300m investment that will see the supermarket chain open 20 new stores a year and achieve strong growth online.

Waitrose’s online business grew 40.6% in the half-year to the end of July.