Our mission is to make
wedding planning as easy as
falling in love
Founding story

It all started with an unforgettable sunset, a surprise proposal, and countless glasses of Portuguese sangria. Like many others, I was one of those couples who got engaged during the pandemic, when online planning became the only option.

What surprised me most? In a world where Airbnbs and Ubers make life seamless, wedding planning was still stuck with spreadsheets and outdated, manual processes. No wonder it’s so stressful!

That’s when the idea for That’s The One (TTO) was born. We’ve built TTO in collaboration with experienced planners and are thrilled to bring it to couples like you—so whether you’re working with a pro or planning solo, we’re here to make the journey smoother, more enjoyable, and uniquely yours.

— Kat, CEO & Founder

Meet the

Meet the

team

team

We are a growing team with 4 nationalities, 5 languages, 17 hobbies and 1 office dog.

We are a growing team of 8 with 6 nationalities, 9 languages, 17 hobbies and 1 office dog. We're based in Paddington - come by and say hi!

Kat Trefilova

CEO, Founder

Excited bride 💍

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Kat Trefilova

CEO, Founder

Excited bride 💍

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Kat Trefilova

CEO, Founder

Excited bride 💍

LinkedIn

Mark Nunes

Front-End Engineer

Cinemaholic 🎥

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Mark Nunes

Front-End Engineer

Cinemaholic 🎥

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Mark Nunes

Front-End Engineer

Cinemaholic 🎥

LinkedIn

Isabelle Robinson

Founders' Associate

Cocktail queen 🍸

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Isabelle Robinson

Founders' Associate

Cocktail queen 🍸

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Isabelle Robinson

Founders' Associate

Cocktail queen 🍸

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Resident
planners

Colin and Holly have been part of the TTO team since the early days. They quickly bought into the vision and have been our guiding light.

Colin Cowie, Colin Cowie Lifestyle

No. 1 Best Wedding Planner by Vogue and angel investor of That’s The One. Colin Cowie Lifestyle creates bespoke and luxury experiences worldwide for clients like Jennifer Lopez, Oprah, and The Kardashians.

Holly, Wonderlust Events

Holly is a destination wedding planner based in the UK, organising beautiful events across France, Spain, the UK and even the Maldives! Once we saw her dance-moves to Daddy Yankee’s “Gasolina”, we knew she was one of us!

A peak into the life at TTO

Our adventures and snapshots

Wedding planning as easy as falling in love 🖤

We are registered business in England and Wales, company number 12816943

With love from London

Wedding planning as easy as falling in love 🖤

We are registered business in England and Wales, company number 12816943

With love from London

Wedding planning as easy as falling in love 🖤

We are registered business in England and Wales, company number 12816943

With love from London