Marks & Spencer

Marks & Spencer (M&S) is one of the most iconic British brands, opening its first store in 1884 in Kirkgate.

Since its very first day trading, Marks & Spencer has raised the standard for food, clothing and homeware goods, earning a loyal customer base of over 33 million people and employing 83,000 staff across the UK.

Company Background

GSA first started providing cleaning services to M&S in 1996, when Gwyneth Fleming, founder and CEO, successfully won the store cleaning contract.

Over the years, GSA has developed a strong working partnership with M&S, tailoring our service to meet their trading requirements and situations, always successfully and consistently delivering a service to suit individual trading environments.

GSA is proud to be the longest serving supplier of cleaning services to M&S, growing and evolving alongside them to continue the business relationship.

Key Facts

  • Since 1996, GSA has increased our portfolio M&S stores to 267, covering Scotland, Northern England, North Wales and the Midlands
  • GSA currently employs over 1,600 staff across M&S sites
  • GSA provides cleaning to all types of stores which M&S operates, from the smallest in Newcastle to the largest in Cheshire Oaks

Client's note

“M&S is delighted to be celebrating GSA’s 20 year anniversary. We have worked together since their formation and throughout this period, GSA has brought many innovations to the cleaning regimes within M&S. We are looking forward to continuing this long term partnership.”

Mark Meadows


Quality Assurance Systems-721x233

GSA provides a comprehensive range of services to M&S, including cleaning, janitorial, window cleaning and specialist services.

Specialist services are varied but include graffiti removal, high level cladding and signage cleaning.

Over the years, GSA has implemented a number of innovative training strategies, including training DVDs and Training Academies. Some of these have become the standard for all M&S cleaning suppliers to use.


M&S has turned to GSA for assistance and evolutionary thinking to develop cleaning services to match the needs of their business as they transformed and changed their customer offer.

From cost saving initiatives to new working methods, training support to subject matter expertise, GSA has provide a supportive and mutually beneficial service since day one, creating a strong partnership bolstered through common understanding.

Everything GSA does is guided by the Four Rs:


  • Reputation
  • Reliability
  • Responsibility
  • Reward

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