Up to 40% OFF
Highlighted by the collected source. This is not a claim about usage, popularity or our own testing.
CODEExpires: Nov 26, 2026
Three Discount Code Black Friday 2026 - 40% OFF
three.co.uk
17 offers to explore · Updated
SAVE ON YOUR NEXT ORDER
Latest Three Promo Code
Most Popular
Popular codes: up to 40% off
Common Three codes from the offers we've collected, shared for reference only. A code isn't guaranteed to work, so check the offer's terms at checkout.
Shop at three.co.uk →20% OFF
CODEExpires: Nov 17, 2026
Save 20% on Airtime with 24-Month Plan
30% OFF
CODEExpires: Nov 17, 2026
Save 30% on Twinkly Smart Lights
5% OFF
CODEExpires: Nov 17, 2026
Save 5% on Your Order
£2 Off
The collected source identifies this offer as official or direct marketing. Check the merchant’s terms before purchasing.
CODEExpires: Nov 17, 2026Use This Three Discount Code for £2 off Unlimited Lite SIMO 24M Plans
Up to 40% OFF
The collected source identifies this offer as official or direct marketing. Check the merchant’s terms before purchasing.
DEALExpires: Nov 17, 2026Save up to 40% on Selected Toys in the Black Friday Sale
20% Off
The collected source identifies this offer as official or direct marketing. Check the merchant’s terms before purchasing.
DEALExpires: Nov 16, 2026Up to 20% Student Discount at Three
Up to 40%
The collected source identifies this offer as official or direct marketing. Check the merchant’s terms before purchasing.
DEALExpires: Nov 16, 2026Apple Watches from Under £20 a Month at Three
Deal
The collected source identifies this offer as official or direct marketing. Check the merchant’s terms before purchasing.
DEALExpires: Nov 16, 2026100GB SIMO from Under £10 per Month at Three
Up to 15%
CODEExpires: Nov 17, 2026
Available Discounts Are Ready in Your Cart
Sale
CODEExpires: Nov 17, 2026
Enjoy Great Savings When You Use a Promo Code
Up to 35%
The collected source identifies this offer as official or direct marketing. Check the merchant’s terms before purchasing.
DEALExpires: Nov 16, 2026Headphones and Speaker from Under £25 Sat Three
£432 Off
DEALExpires: Nov 17, 2026
Save up to £432 This Black Friday - 6.3-inch ProMotion Display, Ceramic Shield 2, All 48 MP Rear Cameras, Center Stage Front Camera, A19 Chip
Reward
The collected source identifies this offer as official or direct marketing. Check the merchant’s terms before purchasing.
DEALExpires: Nov 17, 2026Up to £80 Cash Reward When You Refer a Friend at Three
Up to 10%
The collected source identifies this offer as official or direct marketing. Check the merchant’s terms before purchasing.
DEALExpires: Nov 17, 202630-Day Return at Three
£1678 Off
The collected source identifies this offer as official or direct marketing. Check the merchant’s terms before purchasing.
DEALExpires: Nov 17, 2026Get Huge Markdowns up to £1678 off on Samsung Galaxy Z Fold8 and Z Fold8 Ultra
Up to 10% OFF
CODEExpires: Nov 17, 2026
Save up to 10% on three.co.uk Products
No offers match this filter.
Recently Expired Three Promo Code
Past promotions for reference. These offers may no longer be redeemable.
EXPIRED
Unlimited Data 5G Home Broadband 24 Month Plans from Under £15 a Month at Three
EXPIRED
Threes Home Broadband from Under £20 a Month at Three
EXPIRED
Save up to 20% on Student Plans
EXPIRED
Up to 2 Days Roaming Free with a Go Roam Pass
EXPIRED
Three 5GB Home Broadband from £13 a Month at Three
Popular Three Promo Code
| Code | Discount | Offer | Expires |
|---|---|---|---|
| NOVAPPLE50 | Up to 40% OFF | Save up to 40% | Nov 26, 2026 |
| STUDY20 | 20% OFF | Save 20% on Airtime with 24-Month Plan | Nov 17, 2026 |
| SAVE30TWINKLY | 30% OFF | Save 30% on Twinkly Smart Lights | Nov 17, 2026 |
| ONDEMAND5 | 5% OFF | Save 5% on Your Order | Nov 17, 2026 |
| 2OFF | £2 Off | Use This Three Discount Code for £2 off Unlimited Lite SIMO 24M Plans | Nov 17, 2026 |
About Three
Three is a British telecommunications company and one of the UK's mobile network operators, running its own network since 2003 and serving over 10 million customers. It trades as Three UK from a head office in Maidenhead. Shoppers can choose from mobile phone contracts, pay-as-you-go plans, SIM-only deals and broadband, with the latest smartphones, tablets and accessories in the line-up alongside mobile and home internet. The network is known for its 5G coverage, which it uses to market fast speeds and reliable connections, and it offers help through a range of support channels.
Three was founded in 2003 and is owned by CK Hutchison, a conglomerate based in Hong Kong; it was the first network in Britain to switch on a 3G service. Customers can pay with PayPal, and devices and accessories bought from Three can go back within a 14-day cooling-off period as long as they are still in as-new condition, with customer service or the returns form the way to begin that process.
There are several ways to spend less. Three runs a Refer a Friend scheme paying up to £80 in cash to both people when a friend takes an eligible plan, and its free Three+ programme gives Pay Monthly and Pay As You Go customers weekly deals, exclusive discounts and presale tickets. Students, NHS staff, Blue Light Card holders, teachers, members of the armed forces through the Defence Discount Service, and key workers can all find reduced plans, while staff get their own deals on plans, devices and accessories.
Merchant information
Confirm current details directly with the merchant.
- Business description
- British telecommunications company
- Country
- United Kingdom
- Founded
- 2003
- Headquarters
- Maidenhead
- Official social profile
- https://instagram.com/threeuk
- Official social profile
- https://twitter.com/threeuk
- Official social profile
- https://www.facebook.com/threeuk
- Official social profile
- https://www.youtube.com/user/three
- Organization
- Three UK
- Phone
- +44-333
How to Use Three Discount Codes at Checkout
Codes go into the discount code box at the Three checkout; deals need no code.
Choose a code
Pick a code from the list above. Its details give the discount and any conditions, such as a minimum spend or an end date.
Reveal and copy it
Select Show Code. A window opens with the full code, a Copy code button and a link to three.co.uk.
Apply it at checkout
Add your items at three.co.uk, then paste the code into the discount code box in your basket or at checkout.
Check the total
Make sure the discount shows in the order total before you pay. If it does not, the order may not meet one of the code's conditions.
Ways to Save at Three
Are there Black Friday deals at Three?
Yes. 2 of the 17 offers are for Black Friday or Cyber Monday, such as "Save up to 40% on Selected Toys in the Black Friday Sale".
Does Three have a refer-a-friend discount?
Yes, Three runs a Refer a Friend scheme. When a friend takes out an eligible Pay Monthly phone, SIM-only or Broadband plan using a person's unique link, both of them can receive up to £80 in cash, shared equally. The reward is normally processed between around 7 weeks and 90 days after the friend's order is confirmed, and it can then be withdrawn to a bank account or PayPal.
Does Three have an app discount?
Yes. Deals and rewards arrive through Three's apps, with exclusive personal offers in the Three app and treats from UK brands in the Three+ rewards app, such as discounted cinema tickets.
Does Three have a military discount?
Yes, Three UK gives military discounts via the official Defence Discount Service. Armed forces personnel, veterans and their families can get reductions on select mobile phones, SIM-only plans and broadband packages.
Does Three have a teacher discount?
Yes, Three offers discounted plans for teachers who are verified through third-party schemes. Among them are 5G Home Broadband from £15/month and SIM-only plans such as 30GB for £8/month. Some teachers find further savings through Blue Light Card benefits.
Does Three have a NHS discount?
Yes, Three provides a 20% NHS discount on SIM-only plans, handsets and Home Broadband. Verification happens through member-only portals such as Health Service Discounts or Blue Light Card.
Does Three have an outlet or sale section?
Yes. Three runs a clearance partner site with discounted handsets and exclusive online deals. That clearance brings sizeable savings through trade-in, with discounts up to 914 on devices such as the Samsung Galaxy S26 Ultra, alongside half-price introductory periods and refurbished phones covered by a 12-month warranty on selected items.
Does Three have a Blue Light Card discount?
Yes, Three gives up to 20% off to Blue Light Card holders, NHS staff and key workers. Verification is usually handled through the Blue Light Card or Health Service Discounts platforms.
Does Three have an employee discount?
Yes, Three offers a range of employee discounts, including free mobile plans plus money off mobile plans, devices and accessories. Staff also get third-party discounts and friends & family offers through their benefits platform.
Does Three have a child discount?
Yes. Three gives up to 20% off children's plans added through its Connect Together family plan, available on eligible SIM-only and pay-monthly phone plans. Existing customers put kids' plans on one bill to save.
Does Three have a student discount?
Yes, Three gives a 20% off on selected airtime, SIM-only and home broadband plans. Verification means submitting an active student email or showing a valid student ID in-store. The discount covers only new contracts, not existing ones.
Questions About Three Discount Codes
Why might my Three discount code not work?
A code fails when the order misses one of its conditions, such as eligible products or a minimum spend, or when the promotion has ended. Each offer's details list its conditions.
How many Three offers are there?
There are 17 Three offers on this page: 8 codes and 9 deals.
Can Three discount codes be used more than once?
No offer on this page states a use limit.
How often does Three release new discount codes?
About 4 a month. Over the past year 45 codes were collected, with the most, 19, in December 2025.
Is there a Three rewards program?
Yes. Three+ is a free loyalty programme for Pay Monthly and Pay As You Go customers aged 18+, with weekly deals, exclusive discounts, presale tickets and referral rewards up to £80. Eligibility covers those customers except some broadband users.
Does Three offer free returns on devices and accessories?
Yes, Three accepts free returns on devices and accessories inside a 14-day "cooling-off" period, provided items are in "as new" condition. A return starts by contacting customer service or using the returns form; in-store returns are generally allowed only for faulty or broadband products.
Is there a discount for NHS and key workers at Three?
Yes, Three gives key workers special discounts. Specific offer details sit on its website.
Payment Methods at Three
Three accepts PayPal.
Three Social Accounts
Three has official accounts on Facebook, Twitter, YouTube, Instagram and LinkedIn.
Three Discount Codes Over the Past Year
Over the past year, 45 Three codes were collected, about 4 a month. The busiest month was December 2025, with 19 codes. The most popular discount was 50% off, offered in December 2025.