Spencer, currently business development director of sister company Polestar Applied Solutions, replaces James Mollard, and will take up his appointment with immediate effect.

Mollard is leaving the company to take up a position outside the group, believed to be a senior sales role with Wyndeham.

Polestar Applied category director Tim Smith said the group was now looking to extend the sales focus of the business, "to encompass a broader commercial and technical remit".

Polestar 4c has also appointed John Dimmick as commercial manager, further strengthening its management team.

Former sales executive Dimmick is currently within Polestar's sales organisation, and previously held production and procurement roles with Abbey National, Grattan and Next.