Mansfield, UK — XX January 2026 [LDC-backed] IDSL Group today announced it has acquired Fire Doors Rite, a specialist provider of fire door inspection, maintenance and installation services, strengthening the Group’s position in the UK fire door market. The acquisition deepens Mansfield-based IDSL Group’s nationwide compliance coverage, capabilities in critical infrastructure environments and adds experienced teams and technology that help building owners and responsible persons evidence and maintain compliance more easily.
Ash Malhan, Group Chief Executive Officer, IDSL Group, said: “We are building the UK’s leading fire‑door‑focused testing, inspection, certification and compliance business. Welcoming Fire Doors Rite accelerates our strategy in the defence segment and strengthens our Compliance Services division which is now two-thirds of the business. The acquisition, as with the rest of IDSL Group, will be supported by our ongoing product business following our investment in a third facility at our Mansfield HQ. Our Knowledge Built, Compliance‑Led approach is powered by market‑leading IP, deep investment in testing and technical teams, and field technology that enables our engineers to deliver demonstrable compliance for customers.”
Fire Doors Rite brings a strong track record in commercial, government and defence estates, with services spanning inspections, compliant repairs and maintenance, and certified installations. Its focus on rigorous processes, traceability and customer reporting complements IDSL Group’s end‑to‑end capability, from original supply of certified performance doorsets to ongoing compliance across asset lifecycles.
The acquisition provides a number of practical benefits for customers. It increases national compliance coverage by expanding inspection and maintenance capacity across multiple sectors, including those operating within critical‑infrastructure environments. It also strengthens the golden thread of fire‑door safety by improving the quality and consistency of data capture, reporting and certification, supporting responsible persons in evidencing compliance from original manufacture through to in‑life performance. In addition, it establishes a fully end‑to‑end service pathway, giving customers a single, accountable provider for testing, inspection, maintenance, repair, replacement and certified doorset supply, supported by the Group’s established technical capability and regulatory expertise.
Fire Doors Rite will continue to serve customers as usual, with integration focused on sharing best practice, aligning reporting, and expanding capacity where demand is strongest.
LDC invested in IDSL Group in May 2024 to help drive organic and acquisitive growth. Since then, the business has increased turnover by 45% to £51m LTM, expanded its manufacturing footprint with a new site in Mansfield and grown headcount to 425. The business also completed the acquisition of Hartland Fire in November 2024, broadening its capabilities in compliance services.
David Bains, Partner, Head of East Midlands and East of England at LDC, commented: “Ash and the team at IDSL Group continue to deliver on a clear strategy to lead the UK market in fire door compliance and services. Fire Doors Rite adds specialist expertise and capacity that strengthens what the business can offer customers operating in highly regulated environments. We’re excited to support the team as they scale both organically and through complementary acquisitions.”
About IDSL Group
IDSL Group is a UK leader in fire‑door‑focused testing, inspection, certification and compliance, supported by a well‑invested manufacturing division supplying certified performance doorsets. The Group’s “Knowledge Built, Compliance‑Led” model combines market‑leading IP, extensive testing and technical capability, and field technology that enables engineers to deliver auditable compliance for customers across health, education, defence, commercial and residential environments. IDSL Group operates from its headquarters in Mansfield, including a recently opened third facility that expands capacity across product and services.
About Fire Doors Rite
Fire Doors Rite provides fire door inspections, compliant maintenance and certified installations for commercial, government and defence estates, helping duty holders evidence and maintain building fire safety compliance with clear reporting and traceability.
More: firedoorsrite.co.uk
About LDC: www.ldc.co.uk/pressrelease
- LDC is a private equity investor and part of Lloyds Banking Group. It is authorised and regulated by the Financial Conduct Authority.
- We have invested £3.9bn to back 179 management teams over the last decade. Today, we have a portfolio of more than 90 businesses across the UK.
- We have made investments across all major sectors of the UK economy and are actively supporting businesses in industries including Business Services, Consumer, Healthcare, ICT, Industrials, Media and Technology.
- LDC-based businesses have grown 3.3x more than the average medium-sized business over the last decade.
- Our teams are based in every part of the UK.
Media contacts
- IDSL Group: Jack Bradley, Marketing Manager — jack.bradley@integrateddoorsets.com — +44 7595 744421
- LDC: Imogen Tripuraneni, Senior PR Manager — itripuraneni@ldc.co.uk — +44 7385 514896
