Guide · updated October 2026

What is a 3PL? A plain-English guide

What a third-party logistics provider does, how it works, what it costs, and how to tell when your brand is ready to outsource fulfilment.

8 minute readFor ecommerce and B2B brandsFree readiness check
In one sentence

A 3PL (third-party logistics provider) is a company that stores your stock and picks, packs and ships your orders for you, so you can focus on growing your brand instead of packing boxes.

The "third party" is the warehouse partner that sits between you (the first party, the seller) and your customer (the second party). Instead of running your own warehouse, hiring packers and negotiating courier rates, you send your stock to a 3PL. Your online store connects to their system, orders flow in automatically, and they get each one out of the door, usually the same day.

You pay for what you use: storage, a fee per order and per item picked, packaging and postage. As your sales grow, the 3PL grows with you, so you never have to find a bigger unit or hire more staff to keep up.

How it works

How a 3PL works, step by step

Connect your storeYour webshop and marketplaces link to the 3PL's system.
Send your stockThe 3PL checks it in and it's live in your portal.
Orders flow inNew orders arrive automatically, with no copying and pasting.
Pick, pack, shipEach order is picked, packed and handed to the courier.
Your customerTracking is sent back to your store and your customer.

See how our integrations work →

The difference

3PL vs 4PL vs doing it yourself

A 4PL (fourth-party logistics) manages your whole supply chain, often by coordinating several 3PLs. Most growing brands don't need one, they need a good 3PL.

In-house3PL4PL
Who runs the warehouseYouThe 3PLCoordinates several 3PLs
Who packs the ordersYou or your staffThe 3PLThe 3PLs it manages
CostsFixed: rent, staff, softwarePay per order and storageManagement fee on top of 3PL costs
Courier ratesYour own volumeThe 3PL's negotiated ratesNegotiated across partners
Scaling for peakHire and train tempsThe 3PL adds capacityThe 4PL arranges it
Best forVery small or very specialist brandsGrowing D2C and B2B brandsLarge, complex global supply chains

Compare in-house and 3PL costs

What it costs

How 3PL pricing works

Most 3PLs, including us, charge for a handful of things. What you pay depends on your products, packaging and volumes.

  • Storage, per pallet, shelf or bin, usually weekly.
  • Goods in, for receiving and checking in your deliveries.
  • Pick and pack, a fee per order and per item picked.
  • Packaging, unless you supply your own branded boxes.
  • Postage, the courier cost for each parcel.
  • Account management and system access, usually monthly.

See our published prices →

Work out your costs

Use our free calculators to see what fulfilment would cost your brand.

3PL cost calculatorMonthly and yearly costs at our rates.
3PL vs in-house calculatorWhat doing it yourself really costs.
Volumetric weight calculatorCheck your boxes aren't costing you extra.
Are you ready?

Is it time to use a 3PL?

Answer five quick questions for an honest view.

Are you shipping around 300 or more orders a month?
Is packing orders taking up your (or your team's) week?
Is stock taking over your office, home or unit?
Do you dread Black Friday and Christmas?
Do you want to sell into Europe or on new marketplaces?
Our honest view

Talk to us
Choosing a 3PL

Six questions to ask any 3PL

  1. Do they know your products?

    Ask who else they work with in your industry, and whether they can handle anything special, like alcohol, batteries or batch and expiry dates.

  2. Can you see what's happening?

    Look for live stock and order visibility in a client portal, and proof of what went in each parcel. We film every packing desk.

  3. Is the pricing clear?

    You should be able to understand every line on your invoice. Ask for published rates and an itemised quote.

  4. Who will you talk to?

    A named account manager who knows your brand beats a ticket queue.

  5. Can they grow with you?

    Check they can handle your peak, B2B orders and, if you need it, European fulfilment.

  6. How easy is it to move?

    Ask how they'll move your stock in without stopping your orders. See how a good move works.

See how brands have scaled with us →

FAQs

3PLs, answered

What does 3PL stand for?
3PL stands for third-party logistics. A 3PL provider stores stock and fulfils orders on behalf of another business.
What does a 3PL do?
A 3PL receives and stores your stock, picks and packs your orders, ships them with couriers, and handles returns. Many also offer kitting, B2B and retail orders, and international shipping.
What is the difference between a 3PL and a 4PL?
A 3PL runs the physical side of logistics: storage, fulfilment and shipping. A 4PL manages your whole supply chain, often by coordinating several 3PLs and other partners.
How much does a 3PL cost?
Most 3PLs charge for storage, goods in, a fee per order and per item picked, packaging, postage and account management. Use our 3PL cost calculator to estimate yours.
When should I start using a 3PL?
Many brands switch at around 300 orders a month, when packing becomes a full-time job, or when they run out of space, struggle at peak or want to sell into Europe.
Do I lose control of my stock with a 3PL?
No. You can see your stock and orders live in a client portal, and a good 3PL gives you proof of what went in each parcel.

Ready to hand over your fulfilment?

Tell us about your brand and volumes and we'll send a transparent, itemised quote, usually within one business day.

See us in action

Scale 3PL in 60 seconds.

Who we are, how we fulfil your orders and why growing brands across the UK and Europe trust us with their stock.

  • 99.98% picking accuracy, same-day despatch on orders in by 12pm
  • A camera on every packing desk, so every order is filmed
  • One stock pool for the UK and EU, from Thame and Rotterdam
Scale 3PL Contact

Is Scale 3PL right for you?

Built for brands ready to scale

We work best with growing D2C and B2B brands shipping 300+ orders a month. Selling into Europe? Our Rotterdam hub gets you there without the Brexit headaches.

  • Fashion & footwear
  • Beauty & skincare
  • Supplements
  • Food & drink
  • Gifting
  • Pet products
  • UK & EU fulfilment

Tell us about your brand

Fill in the details below and we'll come back to you within one working day.

Thanks — we'll be in touch

Your enquiry has been sent to our team. We typically respond within one working day.

Standard pricing under 299 orders/month
Everything you need to get started, no hidden fees
Monthly licence fee£399.00
Admin charge per order£1.50
Picking per unit£0.45
Shipping from£5.50
Goods in per ASN£30.00
Storage pallet / week£8.50
Storage shelf / week£3.50
Storage bin / week£1.50
Happy with these rates? Email us directly to get started hello@scale3pl.co.uk All prices exclude VAT.

We respond within one working day.

Something went wrong please email us at hello@scale3pl.co.uk.