STV PR manager Stevenson and former SMG head of communications Johnston to join Spreng & Co

Meanwhile Johnston, who has been working with the agency on a consultancy basis, will become a director and join the board.

The agency, which works with clients such as Tennent Caledonian Breweries, Macfarlane Group, Forth Energy and Forth Ports, alongside sister company Liddel Thomson Consultancy, also recently moved to The Herald Building in Glasgow’s Merchant City last month.

“Debbie coming onto the board and Kirstin joining us in July puts Spreng & Co in a strong position going forward,” commented Spreng. “We work closely with our clients and with oursister company, Liddell Thomson, and there’s no doubt that the opportunity to work with these growing businesses helped us to attract both of these highly regarded media & communications professionals. I am confident that these appointments represent a platform for further growth for the business.”

Johnston said: "This is an exciting opportunity to be part of a great team working with some fantastic clients. I've known Callum for many years and was delighted to be asked to join the business. Kirstin will be a great addition when she joins in the summer and I'm looking forward to working with them both at Spreng & Co."

Stevenson added: “I’m thrilled to be joining Spreng & Co at what is an exciting time for the business. It’s young, dynamic and ambitious, and I’m looking forward to working with their impressive list of existing clients and helping to grow the business going forward, particularly in the media and consumer sectors. I’ve know the top team for many years now, I like their straightforward, honest and creative approach to business, and I can’t wait to get stuck in.”

STV is currently advertising for Stevenson's replacement in the role of PR manager.