RJ Wilson is a specialist fire and security contractor based in Woodhall Spa, Lincolnshire, covering Lincolnshire, Nottinghamshire, Cambridgeshire and the surrounding region. We design, install, commission and maintain fire alarm and electronic security systems for commercial premises, educational establishments, HMOs, and industrial sites.
We are BAFE SP203 approved and SSAIB accredited — independently audited twice a year for fire systems and once a year for security. Every engineer on our team holds an NVQ Level 3 (EAL) qualification in fire and security, and all have completed the full BS5839:2025 training update, not just a short refresher course.
We don’t use subcontractors. The team that wins your contract is the team that designs, installs, and maintains your system.

Jonathan Marr — Managing Director
Jonathan has worked in the fire and security industry since 1991, when he joined ADT as an apprentice alarm engineer straight from school. Over three years he completed a formal structured apprenticeship — including regular training at ADT’s Birmingham centre covering product knowledge, quality assurance, and management — developing both the technical grounding and the professional standards that still define how RJ Wilson operates today.
After eight years with ADT, Jonathan joined an independent Nottingham-based firm where he worked directly alongside the owner for over thirteen years. There he learned not just how to run installations, but how to run a business — handling everything from client relationships and compliance to staff development and quality control.
A family move to Lincolnshire led to the founding of RJ Wilson in October 2019. Built from the ground up as a separate entity, the company was established with one clear principle: do things properly, every time.
Jonathan’s project history spans over three decades and includes work at Windsor Castle, Sports Bike Shop (one of the UK’s largest motorcycle accessories distributors), Giles Academy, Spalding Academy, Hotel du Vin Stratford-upon-Avon, Valentine Court Student Accommodation, and most recently a contract at RAF Digby.
How we work
Qualified — not just certified. A lot of firms have one qualified person who signs everything off. At RJ Wilson, every engineer is individually qualified to NVQ Level 3. Each carries personal legal accountability for their work — and that’s exactly how we want it.
Audited, not self-assessed. BAFE audits our fire systems twice a year. SSAIB audits our security systems once a year. These aren’t internal reviews — they cover both our procedures and live installations.
Ongoing CPD, not box-ticking. We log CPD hours for every engineer, consistently exceeding the eight-hour industry requirement. When BS5839:2025 was updated, we did all five modules of the full course — not a short update session.
No subcontractors. When you hire RJ Wilson, you get RJ Wilson. The same engineers who win the contract carry out the work and maintain the system. We don’t pass jobs on.
We do not compromise. That’s not marketing language — it’s an internal standard. When a decision needs to be made, we ask: if this was on the front page tomorrow morning, how would we feel? That question shapes every job we take on.
Accreditations
- BAFE SP203 — Fire detection and alarm systems (audited twice yearly)
- SSAIB — CCTV systems and intruder alarm systems (audited annually)
- All engineers: NVQ Level 3 (EAL) in fire and security
- Ongoing CPD — BS5839:2025 full five-module certification
A note on why this matters
Fire and security systems are life safety systems. The Regulatory Reform (Fire Safety) Order 2005 places legal responsibility on the Responsible Person for every commercial premises in England and Wales. Getting the specification wrong, using underqualified engineers, or cutting corners on commissioning doesn’t just risk a fine — it risks lives and invalidates insurance.
We exist because those standards matter, and because there are too many firms in this industry that treat qualifications as paperwork rather than proof of competence.
If you want a contractor you can put your name to when the auditors arrive, we’d like to talk.
