Scroll to content

It’s an exciting time at NSS. Join us on the journey.

As a business that depends upon its industry-leading expertise, our primary asset is our people. That’s why we value them so highly – always looking to develop, empower and inspire by granting ownership and rewarding hard work. There’s simply no limit to what you can achieve when you work at NSS.



Everything we do at NSS is underpinned by our vision and values, creating a culture that unites all four divisions but also separates us from the competition. Led by founder and CEO, Niel Bethell, we support our people to be the best they can, always.

The safest way
We thrive on a challenge, but never at the expense of safety. It’s ingrained in our culture and at the heart of everything we do.
Continuous improvement
We’re passionate about the high standards of our people, process and service. Yet we never rest on our laurels. We’re always looking to improve, whether it’s how efficiently and responsibly we work or the services we deliver.
Working together
By harnessing the collective talents across our divisions and working together as one team, we can accomplish just about anything. Success comes with active collaboration.
Dependable service
We’re 100% focused on what our customers need, dedicated to meeting them quickly, reliably and exceeding expectation whenever possible.
Empowering people
As our business grows our people grow with it. Scaling up nationally doesn’t need to mean scaling down the local and personal touch we offer our customers. By empowering people, we want to inspire them to make better and faster decisions adding value to the customer experience.

Why choose NSS

We’re a specialist services supplier. From building maintenance to window and technical cleaning, platform hire and equipment testing – self-delivered services, anywhere in the UK. We don’t use sub-contractors. We don’t hire equipment or machinery. Our dependable, in-house team works around the clock and across the country, setting new standards for safety, speed and consistency.

A clean, well-maintained and fully functioning building is essential to keeping your business moving and presenting a positive and lasting impression to your customers. So whether it’s our team of experts working seamlessly on site, or our best-in-class equipment on hire, you can be sure that we’ll be acting reliably and with your brand’s reputation firmly in mind. Your business operations are depending on us and we never forget it.



Our success hasn’t happened overnight. Here is the story of the hard work behind the creation and growth of the businesses that would eventually merge to become NSS.

Founded 2005

High Access is founded by Niel Bethell

2009 Founded

Nationwide Window Cleaning (NWC) is founded by Thornton Tasker

2014 Investment

BGF provides long-term growth funding of £2m to NWC

2016 Investment

High Access secures £3.3m investment from the BGF.

2017 Acquisition

NWC acquires cradle maintenance and testing business Electromec

2017 Acquisition

NWC acquires Reflekt Window Cleaning to enhance Midlands regional presence

2017 Acquisition

High Access acquires premium truck-mounted platform business AA Access

2018 Acquisition

High Access acquires Falkirk-based platform hire company Outreach Access

2018 Merger

BGF backs merger of High Access and NWC to create the NSS Group of businesses

2019 Rebrand

NSS launches four new divisions to replace High Access, NWC, Electromec and AA Access

WA15 9NE
WA15 9NE Altrincham Directions 02012548938 View page


DA1 4AL Dartford Directions View page


FK2 9AR Falkirk Directions View page

Leeds Office

LS15 9JN
LS15 9JN Leeds Directions View page


M11 2NB
M11 2NB Manchester Directions View page


NN1 2JH Northampton Directions View page


RG1 7QF Reading Directions View page


SL1 4EP Slough Directions View page

Already working at Nationwide Specialist Services?

Let’s recruit together and find your next colleague.


Career site by Teamtailor