McDonald’s UK Turns Forgotten Facebook Group into Filet-O-Fish Comeback Campaign

A Facebook group with just six members became the unlikely heart of McDonald’s UK’s newest campaign for the Filet-O-Fish.

Partnering with Leo Burnett UK, the fast-food giant revived "The Filet-O-Fish Facebook Society of 2012."

It's a page originally created by a fan more than a decade ago.

As quirky as the title sounded, its goal was to build momentum around a once-overlooked menu item with a quietly devoted following.

What started as a digital artifact has now transformed into a full-scale marketing push, crowned by the launch of McDonald’s first-ever "National Filet-O-Fish Day" on July 1.

“The Filet-O-Fish is an unsung hero on our menu... holding a special place in the hearts of its very loyal fans. You know who you are," reminded Matt Reischauer, marketing director at McDonald’s UK.

“From a Facebook group revival to the launch of the delicious Double Filet-O-Fish, this campaign proves how a small yet mighty fanbase can become something much bigger.”

To celebrate the moment, McDonald’s released a one-day-only offer pricing the new Double Filet-O-Fish at just £2.

That's the same cost as the original Filet-O-Fish when the group first launched in 2012.

“This small corner of the Internet perfectly captured the passionate but often overlooked fandom the iconic product has," James Millers and Andrew Long, executive creative directors at Leo UK added.

Fans, including the OG members of the Facebook group, have waited a decade for this, and now, they're "showing up in force."

From Group Chats to Billboards

The campaign kicked off with Phil A. O’ Fish, McDonald’s long-retired mascot created in 1975, returning to Facebook to spearhead the revival.

Decked out with sea-themed comedy and revamped visuals, Phil helped spark conversation in the group while encouraging user-generated content.

This included memes and hacks to an original Filet-O-Fish poem that McDonald’s turned into an official sea shanty.

CRM efforts led by TMW invited top customers into the group with exclusive merch, while nostalgic ads mimicking 2012 Facebook UI popped up across OOH placements in London.

National press ads ran in The Sun and Metro, with paid social pushing traffic directly into the group starting June 25.

By June 26, McDonald’s had officially unveiled the Double Filet-O-Fish in the Facebook group, and the fandom caught fire.

Users flooded the page with comments, stories, and praise, generating more than 8,500 engagements in a matter of days.

Influencer PR kits, coordinated by Ready10, helped spread the word, while one fan even waved a homemade Filet-O-Fish Society flag at Glastonbury.

On July 1, restaurants across the UK celebrated National Filet-O-Fish Day with in-store promotions and digital takeovers.

For a humorous final touch, McDonald’s even enlisted etiquette coach Grant Harrold to settle a long-standing debate: Fil-lay or Fil-let?

Our Take: Is Nostalgia the New Loyalty?

What I love about this campaign is how it went all-in on something as specific and niche as a 2012 Facebook group.

Even more impressive, it turned that fan love into a national celebration.

The new efforts from the brand and agency are not just about reviving an old fandom, but about turning micro-loyalty into mass culture.

In an era where people crave authenticity, McDonald’s finds a way to honor that loyalty with creativity, charm, and a smart sense of timing.

It’s a reminder that brand identity doesn’t always need reinvention. Sometimes, you just have to look to the past to carve a path for the future. 

On the other side of the map, McDonald's Canada brought the flavors of the globe to its menu. 

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