The Concertina Expandable Barriers are perfect for providing security and safety for both public and private use. From construction sites, public areas and the leisure industries, for permanent fixtures and temporary solutions such as maintenance and cleaning operations. 

We have the widest range of expandable barriers in Steel, Plastic and Aluminium. 

Concertina Expandable Barriers

These unique and innovative safety barriers are made from aluminium alloy and have an attractive, retractable design and can be quickly installed and operated.

concertina aluminium alloy barrierA lightweight and strong design, complemented by safety locks on the wheels and mechanical locks, reducing chances of movement when they are positioned as stationary. Also known as a “Turtle Barrier”.

concertina barrier safety wheel locks

All safety barriers are fully tested, to maximize quality and safety, which is a top priority. The Concertina Diamond Barriers have many safety features; produced in high visibility yellow with high visibility reflectors for safety at night.

Mechanical bracing locks the safety barriers when they are extended.

concertina barrier braces

For a very wide range of applications and areas, this easy to extend and install a safety barrier system offers many advantages over a fixed safety barrier system.

extendable steel barrier system

Safety Barrier Specifications

  • 1.3 m height x 2.1 max extendable width
  • 1.8 m height x 2.1 max extendable width
  • 1.8 m height x 4 m max extendable width
  • Tough and Durable
  • Produced in high visibility yellow
  • Safety locks/brakes on the wheels
  • Hi-visibility reflectors for safety at night.
  • Indoor and Outdoor Barriers
  • All barriers fully tested
  • Easy to install

Instant Gate Red and White

instantgate A

Our expanding barrier designed to quickly and easily control pedestrian and vehicular traffic, even in large volumes!

  • Weight: 28 kg
  • Dimensions: 440 × 550 × 1380 mm. Extends from 440 to 2190 mm long.
  • Two heights 1380 (4 foot) and 1884 (6 foot 2 Inches) mm
  • Quick to situate in position and move around, but also easy to lock in place
  • Brake to secure one end in place
  • Lightweight, yet strong and rigid
  • Wheels allow for simple portability
  • Simple to use catch, to lock in position and attach multiple barriers together for wider openings
  • Designed for high visibility

instantgate closed

instantgate open

Available in two models

Model Closed Dimensions mm
IG4 440 x540 x 1380 High
IG6 450 × 542 × 1884 High


Instant Gate, a new quick-to-deploy crowd barrier that's robust and easy to extend to any length. Ideal for crowd control or pedestrian/logistics management in a wide range of situations. Use indoors or outside, and extend to any length by adding additional units. The 4ft (1.22 m) high Instant Gate deploys in seconds to cordon off restricted areas. Easy to move and expand single-handedly. Robust braked wheels allow for easy movement and placement. The unique latching system secures the barrier in a closed position when not in use, and can be used to extend to any length using additional modules. Highly visible red and white markings are powder-coated and waterproof.
Made from lightweight, ultra-strong aluminium. Can be fitted with standard scaffold clamps to fix to scaffolding or turn corners.

Trellis Barriers

trellis barriers red and white

Trellis Barriers are strong, expanding barriers that can be quickly and easily deployed to highlight no access areas.

Strong, stable all steel construction.
Quick and easy deployment.
Reflective Red warning strips.
Chain hooks incorporated.
Two versions, Light and Heavy Duty.


Forecourts, closing off lifts, access ways and exits and entrances, hazardous areas etc.


FLEXI-LIGHT Barrier – Light duty model

  • Height: 1,000 mm
  • Trellis bars: 25 mm x 4 mm
  • Extended width: 3.6 meters
  • Foot depth: 500 mm
  • Finish: Red/white dip painted Red reflective strips
  • Weight: 12 kg

FLEXI-BARRIER - Heavy-duty model

  • Height: 1,000 mm
  • Trellis bars: 40 mm x 5 mm
  • Extended width: 4.0 metres
  • Foot depth: 500 mm
  • Finish: Red/white dip painted Red reflective strips
  • Weight: 19 kg

trellis barriers red and white closed

Portable Plastic Mobile Barrier

FG9S1100YEL mobile safety barrier on site


Portable Mobile Barrier

Part of the Workplace Essentials range of products, Plastic Concertina Mobile Barrier is an easy to use, easy to store, and easy to move, indoor health and safety solution. Consisting of 16 hinged panels that, when extended, measure a total of 4 metres long, the mobile barrier can be manipulated to any shape to suit your health and safety needs.

FG9S1100YEL mobile safety barrier yellow

Features and Benefits

  • Easy to use and manoeuvre, the safety barrier is highly visible due to its bright yellow colouring
  • Lightweight and compact, the barrier can be stored with ease due to collapsible design
  • Fitted with two 5” non-marking wheels that facilitate easy transport of barrier to and from its location
  • When fully extended, the barrier measures 4 metres in length
  • Panels are hinged to enable the barrier to be curved to any shape required when extended
  • Designed for indoor use
  • Ships fully assembled
  • ANSI and OHSA compliant


  • Dimensions: CM W33.02 x H101.6 x D59.69
  • Material: Polyethylene
  • Product Code FG9S1100YEL

Folding Plastic Barrier 2500 mm

pfb2500 closed expanding barrier


  • Temporary expanding barriers unfold from 230 mm to 2.5 m long fully extended.
  • 380 mm Wide legs at either end, which can both be filled with water via a 20 mm screw cap on each one, for greater weighted stability.
  • Each side has red and silver reflective criss-crossing strips for maximum visibility across the whole barrier.
  • Small hooks at top and bottom of each leg to attach either signage or tape around the perimeter of the barrier.
  • Each leg has 2 x Ø50mm holes in to allow several barriers to be attached end to end, or simply secured in place by various means (fixings not included).
  • A single 8 mm hole through each leg allows bolting them together or in place (fixings not included).
  • Ø35mm Hoop on top of each leg for a cordon or tape from end to end, for greater visibility or security.
  • Sturdy yet flexible material allows for quick and easy stowing.

pfb2500 open expanding barrier

  • Weight 2.4 kg
  • Height 980 mm
  • Closed 230 mm
  • Open 2500 mm

Safety Barriers Online Shop

A great range available including our InstaGate Barrier and Extendable Diamond Barrier, both are crowd control barriers that can be easily moved and deployed by one person. We also have smaller Metal Barriers as well as Plastic Water Filled Barrier.

Vat GB591551821 Company Number 02906480 – 1994
Dun and Bradstreet, Number (581590544)
NATO Code Number (NCAGE KD520)
EORI Number GB591551821000


Merlin Industrial Products @ 2024 Errors and Omissions Excepted


Call 01752 690622 / 0800 0418 650 (UK)