Cumbrian bus and coach company Reays has been included in the London Stock Exchange Group's official list of 1,000 Companies to Inspire Britain.
The Wigton-based family-run firm is named among the fastest-growing and most dynamic small and medium-sized businesses in the UK in 2015.
Reays, which runs one of the North's largest fleets of luxury coaches as well as Carlisle's City Hopper public bus service, makes its first appearance in the LSEG's second edition of its annual book featuring 1,000 different companies from all over the UK.
Xavier Rolet, the London-based group's chief executive officer, wrote to the company's managing director Chris Reay to congratulate him on the achievement saying: "The list shines a light on some of the UK's most vibrant companies, including yours.
"Your company and the other 999 featured in the report are proof of all that the UK has to offer. On behalf of the London Stock Exchange Group, I thank you for inspiring us."
The list gives brief details of Reays, listing its revenue band as £6million-£10 million. The company was started in 1980 by Chris' father Walter with just one mini-bus. It now employs more than 100 people and operates 40 vehicles and its own holiday business, with Premier League Burnley FC and Sellafield among its high-profile clients.
Chris said: "It was a great surprise to us when we received a personal letter from the CEO of the London Stock Exchange Group. It is fantastic for our family business to be included in the top 1,000 companies in the UK as an inspiring and vibrant business that out performs our sector peers.
"We are very grateful to all our employees, customers and suppliers as it is only possible to achieve such recognition through a united team effort. Every day in every way we look at ways to improve our business."
As well as identifying 1,000 companies, the annual report examines in detail the opportunities and challenges facing SMEs (Small and Medium-sized Enterprises) and looks at the sectors and trends that will shape the future of the UK economy.
In his letter to Reays, Mr Rolet added: "To be selected for this, businesses had to demonstrate not only positive growth in revenue over the last four years but also significantly outperform their sector peers. The result is a list of companies richer and more varied than ever identified in any other exercise of this type."
More than 50 different sectors were included in the book, from architecture and manufacturing to asset management and food and drink. It was launched on Monday March 9.
The London Stock Exchange Group dates back to 1801 and has significant operations in Italy, France, North America and Sri Lanka in addition to the UK. The group employs approximately 2,800 people and is a diversified international exchange group at the heart of the world's financial community, operating a range of international equity, bond and derivatives markets.