Shipping Container Lock Box & High-Security Padlock

Protect your shipping or storage container with our patented Contain-A-Lock® Padlock Protector Shroud, trusted by many businesses and private storage customers across Great Britain. Engineered to prevent theft, cutting and tampering, this heavy-duty lock box shields your padlock and safeguards your container contents.

The Contain-A-Lock® system can be welded before delivery or supplied with fitting instructions, giving you total flexibility when securing your container.

Key Features of the Contain-A-Lock® System

Below is a quick summary of why customers choose our patented padlock protector lock box for maximum security. For more detailed specifications, download our product specification sheet below.

  • Made from heavy-duty 4mm heat-treated steel for high cut resistance and long-term durability.
  • Tamper-proof and corrosion-resistant, ensuring consistent performance in harsh outdoor environments.
  • With a built-in lock retention system, your padlock securely hangs inside the shroud while you access your container, so it can’t be misplaced.
  • Clean, low-maintenance design that is easy to operate.
  • Supplied with the high-security CISA 285/75 padlock.

Guide to Installing and Using Your Container Lock Box

Whether welded by us or supplied for self-installation, our shipping container lock box includes clear, easy-to-follow instructions for fitting and removing the padlock.

The main advantage of our system is that the padlock remains fully protected inside the shroud when the cargo doors are opened – a unique and user-friendly design that prevents you from losing the lock while organising your storage.

Watch our quick padlock installation video or download our full guide to see exactly how the system works.

A blue Contain-A-Lock shroud fitted to a blue shipping container door, with an instruction label showing how to operate the locking system. The shroud is mounted over the door’s central locking bar, and the surrounding container doors and metal fixings are visible in the background inside an indoor workshop setting.
Lock It Right: Your Padlock Installation Guide

Secure Your Container Storage Today

With over 40 years in the shipping container industry, we supply quality units across Great Britain, with many customers choosing our Contain-A-Lock® Padlock Protector Shroud for added security and peace of mind.

Customers choose us for:

From London to Glasgow, Birmingham to Manchester, we can help you secure your container with proven, high-quality lock solutions.

Call 01922 741751 or complete the form below for a tailored quote and to discuss the best security options for your container.

A white Contain-A-Lock protector shroud installed on a white shipping container door. The printed operating instructions are clearly visible on the front, and the metal locking bars run vertically on either side. A padlock shackle protrudes slightly from the bottom of the shroud, showing the lock mechanism in place.

Get a Quick Quote

We supply new and used shipping containers, bespoke container conversions, and modular building solutions across the UK.
Fill in the form below to start your enquiry, and our team will be in touch to discuss your requirements.

Didn’t find what you were looking for?

Just get in touch and we’ll guide you to the best option.

FAQs

What is the best lock for a shipping container?

The most secure option is a high-security padlock with a padlock protector shroud. Our patented Contain-A-Lock® Padlock Protector combined with the CISA 285/75 security padlock provides maximum resistance against tampering – making it the ideal lock for shipping and storage containers.

How do I make my shipping container more secure?

Start by upgrading the locking system. Standard container handles don’t provide enough protection, but adding a padlock protector shroud prevents criminals from accessing the padlock with tools. For extra security, choose a CISA padlock and consider positioning your container in a well-lit, secure location.

Can I fit a container padlock protector myself?

Yes. The Contain-A-Lock® system can be supplied with instructions for customers to weld on themselves, or it can be factory-welded before delivery for a ready-to-use solution.

Are container padlocks weather resistant?

Yes. The CISA 285/75 padlock supplied with our Contain-A-Lock® is built with nickel-plating and anti-corrosion treatment, making it highly resistant to rust, moisture, and harsh UK weather conditions.

Are CISA padlocks insurance rated?

Yes. The CISA 285/75 lock is insurance rated, designed to meet commercial and business security requirements. This makes it suitable for self storage sites, construction projects, and private use where insurance compliance is important. Please contact our team for further information.

Some of Our Valued Customers

What Our Customers Say

Patrick26th November 2025

Unfortunately our delivery was delayed by several hours but the driver made up for lost time, he was very polite and proffessional and sited the container inch perfect.

Rose25th November 2025

I was treated extremely well they took care of what I needed without any fuss.

Nancie24th October 2025

I cannot thank the staff at S Jones Containers enough. Everyone I spoke to went over and above to help. The containers were ordered and delivered in a very timely manner. We were kept informed at all times. The containers arrived at the time expected and were very easy to install. Thank you to everyone at S Jones Containers. I would highly recommend this company, it was a pleasure doing business with them.

Christine1st August 2025

Shazia was helpful from my first enquiry to the delivery of my container. She sorted any query and enabled me to buy exactly what I was looking for. The driver who delivered container was also a credit to his company. Nothing was too much trouble and everything done with a smile .

Phil20th June 2025

Got in touch with Shazia at the depot she organised everything delivery was a bit worrying as the area was tight but the delivery guy was amazing and got them exactly where we wanted them ,, all a very good service provided