What security do I need for insurance compliance?

Most insurance policies specify minimum Grade 2 or Grade 3 security systems installed by NSI or SSAIB-accredited contractors. Check your specific policy requirements before installing anything. Non-compliant security can invalidate your cover.

How much should I budget for arch security?

Budget £3,000–£6,000 for a combined setup: electric roller shutters on all openings (£1,000–£2,400), a Grade 2 intruder alarm with ARC monitoring (£500–£1,000 + £15–£25/month), and a 4-camera CCTV system (£1,200–£2,000). This is a fraction of the average £3,000–£5,000 break-in loss.

Can I install external roller shutters on a listed arch?

No. If the viaduct is Grade II listed, roller shutters must be internal. External shutters would alter the building's character and would not receive Listed Building Consent. Internal shutters are typically recessed behind the shopfront or infill wall.

Is the rear of my arch a security risk?

Yes — the rear opening is the most commonly overlooked vulnerability. Rear infill walls are often lighter construction than the front. Install electric shutters on both front and rear openings, and ensure CCTV covers the rear approach.

Should I get monitored or unmonitored alarms?

Monitored alarms (connected to an Alarm Receiving Centre) are strongly recommended. They cost only £15–£25/month and provide 24/7 professional response. Unmonitored alarms rely on neighbours hearing the siren — in an isolated arch location at night, that may not happen.

Railway Arch Security: Protect Your Business

How to secure a railway arch. Roller shutters, CCTV, alarm systems, insurance requirements, and cost breakdowns. Practical advice from security specialists.

By Taro Schenker, Founder & EditorLast updated: February 2026

Railway arches present unique security challenges. Most have two open ends (front and rear infill walls), are often isolated at night, and the old mortar in Victorian brickwork can be vulnerable to forced entry. Average break-in losses run £3,000–£5,000 per incident.

Good security is also an insurance requirement — most policies specify minimum Grade 2 or 3 security systems installed by NSI or SSAIB-accredited contractors. Spend wisely here and your insurance premiums will reflect it.

Roller Shutters

Electric roller shutters on all openings (front and rear) are the minimum baseline. The rear opening is often forgotten but is the most common entry point for break-ins.

Type	Cost
Manual steel	£250–£600
Electric steel	£500–£1,200
Insulated electric	£800–£2,000
High-security rated	£1,500–£3,500+
Industrial (Gliderol-type)	£959–£1,580
Installation (additional)	£200–£500

If your viaduct is Grade II listed, roller shutters must be internal, not external. Factor this into your design and budget.

CCTV and Alarm Systems

System	Installed Cost	Maintenance
Basic 4-camera HD CCTV	£1,200–£2,000	£150–£300/year
Mid-size 8–16 cameras	£3,500–£9,000	£300–£600/year
Wired intruder alarm (Grade 2/3)	£500–£1,000	£150–£600/year
Monitored alarm (ARC)	£500–£1,000 + £15–£25/month	Included
Combined CCTV + alarm	£2,000–£5,000+	£300–£600/year

Recommendations

Use NSI or SSAIB-accredited installers — insurance policies often require this
A Grade 2+ intruder alarm with ARC monitoring (£15–25/month) is cost-effective insurance against £3,000–5,000 break-in losses
External CCTV with visible deterrent signage reduces attempted break-ins significantly
Consider shared estate CCTV with neighbouring tenants to reduce per-unit costs
Ensure all security specs meet your insurance requirements before installation — not after