Woman on a forklift
Female warehouse worker

What are third-party logistics (3PL) services?

Third-party logistics (3PL) services enable organisations to outsource warehousing, inventory management, order fulfilment, transportation and other supply chain operations to a trusted logistics partner.

As a leading third-party logistics provider in the UK, Iron Mountain delivers flexible 3PL services and 3PL solutions that help organisations adapt to changing demand without sacrificing governance or service quality.

Our end-to-end logistics management approach brings together warehousing, warehouse fulfilment services, inventory management, transportation and distribution as one integrated solution.

This connected approach helps businesses maintain consistent service levels while responding to peak demand, launching new product lines, supporting multi-site distribution or building long-term operational efficiency through scalable end-to-end logistics solutions.

Our end-to-end logistics & warehousing process

Connect every stage of the supply chain with end-to-end logistics management. From receiving inventory to final delivery and returns, our integrated approach helps your organisation improve efficiency and deliver a consistent customer experience.

  • Inventory Receipt: Goods are received, inspected and logged into inventory.
  • Warehousing: Products are securely stored in strategically located warehouse facilities across UK.
  • Inventory Management: Real-time inventory tracking helps maintain accurate stock levels and availability.
  • Order Processing: Customer orders are captured, validated and prepared for fulfilment.
  • Pick and Pack: Items are accurately picked, packed and readied for shipment.
  • Fulfilment: Orders are processed efficiently to meet delivery timelines and customer expectations.
  • Transportation: Flexible transport solutions move products to their destination through trusted carrier networks.
  • Returns Management: Returned items are received, inspected and processed for restocking, repair or disposal as appropriate.
  • Reporting and Optimisation: Performance insights and operational reporting help identify opportunities to improve efficiency and optimise logistics operations.

Our sustainability and ESG solutionsmountain ranges

Contract logistics

A strategic partnership model that grows with your business.

Contract logistics is designed for organisations that need an operating partner, in addition to warehouse space. This model supports complex fulfilment requirements across demanding verticals, with dedicated or scalable shared-site options.

What’s included:

  • Highly flexible strategic partnership model that adapts and scales to your operational needs
  • Dedicated or shared site options
  • Complex fulfilment for Food, FMCG, Retail, Grocery and Manufacturing.
  • Complete value-added services including contract packaging, display building, labelling, kitting, FBA prep, and returns

Best for

  • Long-term operations where performance consistency and governance matter
  • Complex fulfilment requirements with value-added services and returns
  • Businesses that need a partner mindset and continuous improvement
Stack of documents
Man pushing pallet jack

On-demand Warehousing

Flexible capacity when the plan changes

On-demand warehousing helps you leverage existing capacity, with flexible terms designed to scale with your business. Use it to protect service levels when demand spikes, timelines shift, or inventory surges.

Common use cases

  • Overflow
  • Product launches
  • Seasonality
  • Temporary storage
  • Special projects
  • Forward stocking location
  • Inventory front loading

Warehousing and fulfilment

Core warehouse operations that keep performance consistent

Simplify your supply chain with dedicated, and shared operations, that support end-to-end warehouse fulfilment. From inbound to dispatch, you benefit from improved control and visibility over your inventory, while reducing operational burden.

What’s included:

  • Dedicated and shared operations
  • Inventory management
  • Storage, pick, pack and dispatch
  • Cross-docking
  • Kitting and labelling
  • Container unloading (de-stuff)

Supports your business

  • Pallet-in and pallet-out operations
  • Case pick operations
  • Direct-to-consumer fulfilment where required
Aerial view of warehouse employees
Woman stacking boxes

Transportation and freight operations

Distribution support across freight and parcel

Take your logistics beyond the dock. We help you manage transportation and freight operations across multiple freight types, giving you the scale to meet high-volume distribution requirements.

What’s includes

  • Solutions for all types of freight, including groupage, LTL and FTL, and parcel
  • 96 depots supporting groupage operations
  • 300+ vehicles per day for LTL and FTL
  • 1.8 billion parcels handled per year
  • High levels of security vetting

Discuss transport requirements

Technology that enables control and scalability

Proven platforms, integration-ready tooling, and automation

Technology should help remove friction, not add complexity. With  proven systems and automation, we help you gain control over inventory visibility, streamline integration, and support operational efficiency.

Highlights

  • Manhattan Associates is our global WMS partner, recognised by Gartner as Best in Class for 18 years
  • A fully featured Web API toolset supports ready-to-go integration, with EDICOM supporting EDI requirements
  • Transport management system integrations help select the best carriers and 3PL partners depending on requirements
  • Dexory automated inventory control supports real-time inventory visibility through continuous scanning and analytics, fully integrated with our WMS
  • Proven experience operating Autostore and ASRS facilities
Discover Technology and Innovation
Man pusing forklift
Man driving forklift

Why choose Iron Mountain as your 3PL & warehousing service provider?

Every detail matters when protecting your most valuable assets. Through consistent execution, practical problem solving and continuous improvement, we take the complexity out of daily operations; freeing you up to elevate the power of your work.

What defines our service culture

  • 120 years of collective expertise in supply chain and logistics
  • We live our values to build long-term partnerships with our customers
  • Entrepreneurial mindset with a can-do attitude
  • Listen to customers. Understand needs
  • Move quickly. Fast-track decisions and ideas
  • Empower people. Drive efficiency and innovation
  • Never stand still. Focus on the future
  • Invest In customer partnerships

Why Iron Mountain

UK industries we support with 3PL logistics

Our services are designed for verticals where precision, compliance, and service consistency matter. These include:

Food, FMCG, Retail, Grocery and Manufacturing

Explore industries we support

Proof in practice

Examples of services applied in real operations.

Frequently Asked Questions

These FAQs expand the most common search-led questions around 3PL services, warehouse fulfilment, and logistics warehouses in the UK.

What 3PL services do you provide in the UK?

Iron Mountain provides a complete suite of UK 3PL services across warehousing, fulfilment, on-demand capacity, and transportation. Services include container unloading, inventory management, cross-docking, pick and pack, kitting, bundling, labelling, value-added services, returns processing, and final delivery.

What is contract logistics and when should it be used?

Contract logistics is a strategic partnership model where a 3PL provider manages dedicated or shared warehouse operations on your behalf. It is typically used when fulfilment performance is business critical, operations are complex, or organisations need to scale efficiently while maintaining governance, consistency, and service levels.

What fulfilment services do you support (B2B and e-commerce)?

We support both B2B and e-commerce fulfilment, scaling from pallet-in and pallet-out operations to case picking and direct-to-consumer delivery. Our services include inventory management, order processing, and returns handling, ensuring accuracy, visibility, and efficient reverse logistics for high-volume or high-value goods.

What is warehouse fulfilment and how does it differ from warehousing and logistics?

Warehousing focuses on the secure storage and management of goods, while logistics covers transportation, distribution, and returns. Warehouse fulfilment connects these elements, linking inbound handling, storage, picking, packing, and outbound delivery to ensure efficient order flow across the supply chain.

Do you offer flexible and on-demand warehousing solutions?

Yes. Our on-demand warehousing model provides flexible access to capacity for short-term or variable requirements, including seasonal peaks, overflow stock, product launches, and forward stocking. We also support longer-term storage through contract logistics, giving you the flexibility to scale as your needs evolve.

How do you improve fulfilment performance and visibility?

We improve fulfilment performance through specialised expertise, scalable operations, and advanced technology. This includes optimised warehouse processes, flexible labour models, and techniques such as cross-docking to accelerate distribution. Our technology stack includes Manhattan WMS, API and EDI integrations, and automation such as Dexory, providing real-time inventory visibility and operational control.

Ready to optimise your supply chain with secure, scalable, strategic fulfilment?

We make it easy to get started.

We're here to help.