Black Friday is already packed with big discounts. Yet many people don’t realise you can push prices even lower. In the UK, the best way to get a Black Friday extra discount is by stacking cashback, new-user referral codes and retailer promo codes. This guide shows you exactly how to do it, with two practical case studies using LookFantastic and MyProtein.

If you want to save more this year, the methods below can help you reduce your Black Friday spend by an extra 20%–40% on top of the advertised sale price.

What “Black Friday Extra Discount” Really Means

During Black Friday, almost every brand runs promotions. However, many shoppers only apply the standard discount shown on the website. You can often do better. You can layer several offers together:

• A Black Friday discount
• A referral code (for new customers)
• Cashback from a website
• Cashback from an app
• A brand-specific promo code

When you combine these, the extra savings add up quickly. It only takes a few minutes.

Step 1: Start With a Cashback Website

Cashback websites give you money back when you shop through them. During Black Friday, rates often increase. TopCashback is the most popular in the UK, and you can sign up using this link which gives a £10 sign-up bonus once you earn £10 cashback:

To get your Black Friday extra discount:

1. Create a TopCashback account.
2. Search for the retailer you want to shop at.
3. Click through to the brand’s website.
4. Shop as normal.

Your cashback will track automatically.

Step 2: Add Airtime Rewards for Additional Savings

Airtime Rewards gives cashback automatically when you pay with your linked card. It works at many health and beauty stores, supermarkets and online retailers.

Because Airtime stacks on top of cashback websites, you can earn twice from one purchase.

To use it:

1. Download Airtime Rewards. (Tips: enter F7G6UPGW in the referral code section for an extra £2 if you shop within 7 days)
2. Link your card.
3. Activate offers in the app or shop normally with your card.

The cashback goes toward your mobile bill or can be redeemed as credit.

Related article: Airtime rewards sign-up code F7G6UPGW

Step 3: Use a Referral Code (New Users Only)

Referral codes offer some of the largest extra discounts on Black Friday. Many brands increase their rewards for new users because competition is high.

Referral codes work alongside cashback and promo codes, so it’s a simple way to reduce your spend.

Step 4: Add a Black Friday Promo Code

Most retailers add a promo code at checkout on top of the sitewide discount. It usually works alongside referral deals and cashback.

Examples include:

• Extra 10% off selected LookFantastic items.
• Extra 25% off MyProtein bundles.

Using all four layers together is how you unlock the biggest Black Friday extra discount.

Case Study 1: How to Stack Discounts at LookFantastic

LookFantastic usually runs a strong Black Friday sale. Here is how you can reduce your total even further:

1. Create a LookFantastic account and enter the referral code DENIS-R17C at sign-up for £10 off your first order over £25 (new users).
2. Activate TopCashback for LookFantastic.
3. Apply the Black Friday promo code displayed on the site.

This combination gives you:

• Sitewide Black Friday discount
• £10 off as a new user
• Cashback from TopCashback
• Possible extra cashback from Airtime
• Extra code savings

It’s one of the easiest retailers for stacking.

Case Study 2: How to Stack Discounts at MyProtein

MyProtein is another popular Black Friday brand with strong stacking potential.

To get your extra discount:

1. Register and enter the referral code DOMI-R53 for £15 off when you spend £45.
2. Activate TopCashback before visiting MyProtein.
3. Add MyProtein’s Black Friday promo code at checkout.

You end up combining:

• Black Friday price reduction
• New user £15 discount
• Cashback on top

This works especially well on supplements, clothing and bundles.

Additional Retailers Where You Can Stack Offers

Many brands follow the same pattern every November. You can try the stacking method for:

• Cult Beauty
• AllBeauty
• Boots
• ASOS
• The Hut Group brands

If a retailer has:

1. a referral program,
2. TopCashback availability, and
3. a Black Friday code,

you can almost always combine them!

Tips for Maximising Your Black Friday Extra Discount

Use these additional tricks for even more savings:

• Check cashback rates daily, as they often increase during the event.
• Create all accounts in advance to avoid missing out.
• Use a card linked to Airtime Rewards for every purchase.
• Never open another tab after clicking through TopCashback.
• Always check if the referral code must be added during account creation.

Small steps make a big difference.

TLTR:

Getting a Black Friday extra discount in the UK is easier than most people realise. When you combine referral codes, cashback websites, cashback apps and promo codes, the savings rise quickly.

LookFantastic and MyProtein are only two example retailers to stack, but the method works across many other brands too. Start with a cashback account, then add your referral incentive, and finish with the Black Friday code.

This simple strategy can reduce the price of your Christmas shopping, beauty gifts or protein orders more than any discount advertised on the retailer’s homepage.