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Concrete Security Fence Posts & Struts | Heavy-Duty Posts for High-Security Fencing

Our range of concrete security fence posts and struts is designed for maximum strength, stability, and resistance to impact — ideal for commercial boundaries, industrial premises, public spaces, and high-security fencing installations. These heavy-duty posts provide a long-lasting solution for steel mesh, palisade, or chain-link fencing systems.

Steel-reinforced concrete for exceptional load-bearing and impact resistance
✅ Designed to support high-security fencing systems
✅ Compatible with chain-link, V-mesh, palisade and welded mesh fencing
Corner, end and intermediate posts available
✅ Matching concrete struts for added support and bracing
✅ Manufactured to withstand harsh weather and high-traffic environments

Whether you're securing a construction site, commercial yard, school, or agricultural boundary, our concrete security posts and bracing struts provide a reliable, low-maintenance solution built to last for decades.

✔️ Bulk orders available for contractors and developers
✔️ Nationwide delivery across the UK
✔️ Trusted by fencing installers, contractors, councils, and estate managers

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Cranked top intermediate concrete post 3075x125x75 - to suit 6ft chainlink

Original price £71.88 - Original price £71.88
Original price
£71.88
£71.88 - £71.88
Current price £71.88
In stock

Cranked Top Intermediate Concrete Post 3075x125x75 - Perfect for 6ft Chainlink Fencing If you're looking for a robust and reliable solutio...

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Original price £71.88 - Original price £71.88
Original price
£71.88
£71.88 - £71.88
Current price £71.88

Draper Security Bit Set (33 Piece)

Original price £9.58 - Original price £9.58
Original price
£9.58
£9.58 - £9.58
Current price £9.58
In stock

Original price £9.58 - Original price £9.58
Original price
£9.58
£9.58 - £9.58
Current price £9.58

Concrete Strut for chainlink - To suit 6ft & 8ft high

Original price £46.80 - Original price £85.90
Original price
£46.80 - £85.90
£46.80 - £85.90
Current price £46.80
In stock

Concrete Strut for Chainlink - Designed for 6ft & 8ft Heights Enhance the stability and durability of your chain link fencing with our...

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Original price £46.80 - Original price £85.90
Original price
£46.80 - £85.90
£46.80 - £85.90
Current price £46.80

Intermediate concrete post 2470x125x75 - to suit 6ft chainlink

Original price £57.72 - Original price £57.72
Original price
£57.72
£57.72 - £57.72
Current price £57.72
In stock

Concrete security posts to suit 1.83m (6ft) chainlink or weldmesh    LINE WIRES: 3 No. at 880 mm centres. Intermediate posts 10 mm holes, straining...

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Original price £57.72 - Original price £57.72
Original price
£57.72
£57.72 - £57.72
Current price £57.72

Cranked top intermediate concrete post 3675x125x100 - to suit 8ft chainlink

Original price £108.00 - Original price £108.00
Original price
£108.00
£108.00 - £108.00
Current price £108.00
In stock

Introducing the Cranked Top Intermediate Concrete Post Elevate your fencing solutions with our Cranked Top Intermediate Concrete Post desi...

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Original price £108.00 - Original price £108.00
Original price
£108.00
£108.00 - £108.00
Current price £108.00

Concrete strainers with cranked barb extension 3075x125x125 - to suit 6ft chainlink

Original price £109.32 - Original price £109.32
Original price
£109.32
£109.32 - £109.32
Current price £109.32
In stock

Durable Concrete Strainers with Cranked Barb Extension Introducing our robust Concrete Strainers with Cranked Barb Extension, designed spe...

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Original price £109.32 - Original price £109.32
Original price
£109.32
£109.32 - £109.32
Current price £109.32

Concrete strainers with a cranked barb extension 3675x150x150 - to suit 8ft chainlink

Original price £191.93 - Original price £191.93
Original price
£191.93
£191.93 - £191.93
Current price £191.93
In stock

Concrete Strainers with Cranked Barb Extension - 3675x150x150 Enhance the security and stability of your fencing with our Cranked Top Secu...

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Original price £191.93 - Original price £191.93
Original price
£191.93
£191.93 - £191.93
Current price £191.93

Concrete strainers 2620x125x125 - to suit 6ft chainlink

Original price £102.60 - Original price £102.96
Original price
£102.60 - £102.96
£102.60 - £102.96
Current price £102.60
In stock

Concrete Strainers 2620x125x125 - Perfect for 6ft Chainlink Fencing Enhance the strength and stability of your security fencing with our h...

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Original price £102.60 - Original price £102.96
Original price
£102.60 - £102.96
£102.60 - £102.96
Current price £102.60

Alter Supplies & Contracting

4.9

93 reviews on

Caroline Clulow
September, 2025
This may sound crazy but, honestly, I've never had such good service. Young men, mostly, who were knowledgeable and so helpful. Don't google for wood, most places are very expensive. Pieces that were £15 on Google were £4 here. 1.8 metre slats at £1.20. Great company.
George Davies
August, 2025
Friendly polite staff nothing to much trouble fast home delivery service would recommend to everyone
Adam Plenderleith (RevRev)
August, 2025
Another delivery from Alter Supplies today. Amazing service even for a relatively small order. Timber and slabs delivered promptly by a very cheery young man! An easy 5* given!