Watch: Ronan Keating surprises Hemel Hempstead shoppers with Tesco Mobile store performance

Shoppers in Hemel Hempstead got to see a surprise performance by Ronan Keating this week as he serenaded customers at a Tesco Mobile store.

The star performed Life is a Rollercoaster in the shop on Monday (January 15).

One video, which has gone viral across social media with more than 15,000 views on TikTok, shows Keating performing in the Tesco phone shop with a guitar in hand - while wearing a Tesco uniform name badge. 

Unsurprisingly, his Hemel Hempstead appearance has caused quite a buzz online as users wondered the reason behind his surprise gig. 

Keating cleared online confusion, as he revealed in a post on Instagram he had been performing in Tesco Mobile stores amid his new role as the Tesco Mobile network's roaming ambassador.

To celebrate Tesco Mobile extending its no EU roaming fee offer until 2025, Keating added that he would be visiting some of the network's stores to "sing a song or two" as well as handing out holiday vouchers.

Keating continued that those who missed his Monday performance may be able to see him at their local Tesco Mobile at the end of the week as he hinted he would be singing at the network's stores once again.