Marks & Spencer

Marks & Spencer (M&S) is one of the UK high street's most well-known and well-loved brands. Since opening its first store in 1884, it has built an internationally-respected retail business on business principles of quality and innovation.

Marks & Spencer continues to set the standard for UK retail business across food, clothing and homewares,. It employs over 85,000 staff in the UK and the company's commitment to quality, value and sustainability has earned them a loyal customer base of over 33 million.

Company Background

GSA has provided commercial cleaning services to M&S since 1996.  Gwyneth Fleming, founder and CEO, successfully won the store cleaning contract and our relationship with M&S continues to grow and evolve.

The retail landscape has undergone many changes across the last two decades, and so too has our service offering. GSA has a strong working partnership with M&S.  We bring tailored and innovative solutions that work across their retail portfolio - from flagship M&S stores, to out of town locations and niche M&S Foodhall sites.  We tailor our service to successfully and consistently meet trading requirements and environments.

GSA is proud to be the longest serving supplier of professional cleaning services to M&S.  We are grateful for the opportunity to work with such an iconic brand.

Key Facts

  • Since 1996, GSA has steadily increased our portfolio of M&S stores to over 300, across the UK, Ireland and Isle of Man.
  • GSA currently employs over 1,800 staff across M&S sites.
  • GSA provides professional retail cleaning services at M&S flagship stores, out of town locations and M&S Foodhall sites.  We are privileged to work with the M&S team at larger sites such as Cheshire Oaks, to some of their smaller locations too.
  • Most recently, we have been delighted to support the opening and ongoing cleaning of M&S Straiton - M&S' first renewal store in Scotland.

Client's note

“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

Innovative & Professional Cleaning Contracts for Retail

Quality Assurance Systems-721x233

GSA provides a comprehensive range of professional cleaning services to M&S.  This includes regular contract cleaning, janitorial, window cleaning and specialist services.

Specialist services include graffiti removal, high-level cladding and signage cleaning.  In today's challenging times, GSA has worked alongside M&S teams to deliver COVID-19 deep cleans and fogging to sites; ensuring a clean and safe environment  - and peace of mind - for M&S staff and customers.

We are proud to have implemented a range of innovative training strategies for our M&S in-store teams; many of which have been adopted as the standard model for all M&S cleaning suppliers.

Why GSA?

Open communication, transparency and a clear understanding of the continually-evolving retail landscape has allowed us to work alongside the M&S team to successfully deliver a professional cleaning service that meets the needs of their business.

From cost saving initiatives to new working methods, training support to subject matter expertise, GSA has provide a transparent and supportive service since day one, and from we're proud of the strong partnership that has developed across the decades.

What guides the team at GSA?  It's our commitment to delivering a reliable, cost-effective, adaptable cleaning service, underpinned by our Values that we call 'the Four Rs':


  • Reputation
  • Reliability
  • Responsibility
  • Reward

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Contact us

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