Maclagan (pictured) has been at Blue Marble since November 2021, and he was senior research executive before taking up his new role.

Tom Clarkson, managing director at Blue Marble, said: “Oscar has been at the heart of many of our most complex and important projects in recent months – including key studies for clients such as Defra, Citizens Advice and Tracklements.

“Oscar has grown with each piece of research he’s been involved in, and this promotion reflects his continued progression as an outstanding researcher.”