Bruno Mars is celebrating a Funktastic 2015 in the United Kingdom…

The 30-year-old part-Puerto Rican singer’s retro blockbuster collaboration with Mark Ronson, “Uptown Funk,” was the top track in the U.K. last year.

The song spent seven weeks at No. 1 and chalked up combined sales and streams of 1.76 million to finish 2015 at the peak of the Official Charts Company’s end-of-year chart, well ahead of tracks by OMI and Hozier.

“Uptown Funk” registered 39 weeks in the Top 40 before finally departing in October. Its total combined U.K. sales since release in November 2014 now top 2.25 million, according to the OCC.

The song, lifted from Ronson’s fourth studio album Uptown Special, proved to be an unstoppable force on both sides of the Atlantic.

“Uptown Funk” spent 14 weeks at No. 1 on the Billboard Hot 100, a feat tied for second behind the 16-week reign of Mariah Carey and Boyz II Men’s “One Sweet Day.”

No other song has spent so long at the U.S. summit during the 2010s.

Ronson, who is based in the U.S. but was born in London, won British single of the year for “Uptown Funk” at the 2015 Brit Awards and he’s a former Brit Award winner for male artist of the year.

Check out the Official Top 40 Biggest Songs of 2015 list here.