Here are the top 10 most watched YouTube ads of May 2018.

1. Even Divas are believers… Mariah Carey stays in a hostel

Brand – Hostelworld – Meet The World

Creative Agency – Lucky Generals Ltd

Media Agency – In-house

2. giffgaff | Stay because you want to stay

Brand – giffgaff

Creative Agency – All Response Media

Media Agency – In-house

3. iPhone 8 (PRODUCT)RED™ Special Edition — Apple

Brand – Apple United Kingdom

Creative Agency – Media Arts Lab

Media Agency – OMD International

4. Scotland is Now – A New Way of Looking at Scotland

Brand – Scotland is Now

Creative Agency – The Union

Media Agency – Carat Edinburgh

5. BONJOUR LANCÔME | Lessons with Chinutay

Brand – Lancome UK-IE

Creative Agency – In-house Wavemaker

Media Agency – Global Ltd

6. iPhone X — Animoji: Panda — Apple

Brand – Apple UK

Creative Agency – Media Arts Lab

Media Agency – OMD International

7.The 919 Tribute on tour. First Stop: Spa

Brand – Porsche

Creative Agency – Kemper Kommunikation

Media Agency – PHD Media Ltd

8. The all-new BMW M2 Competition

Brand – BMW M

Creative Agency – iris Nation Worldwide Ltd

Media Agency – Wavemaker Global Ltd

9. HUAWEI presents… A Phone Anonymous

Brand – Huawei Mobile UK

Creative Agency – Doner London

Media Agency – Wavemaker Global Ltd

10. BPme – the new way to pay for fuel from your car

Brand – BP

Creative Agency – TBWA/Manchester Ltd

Media Agency – Mindshare Media UK Ltd