The London-based singer said that although it is not quite as popular as Beyoncé's quick-to-sell-out UK tour, he is happy with the number of tickets bought.
He said: "This is my first ever live concert where I will perform my own influences in Hindi and English. It's not like Beyoncé's ten-minute sell-out, but 70% of tickets have already been sold, and the show is not until April 20 which is just shy of two months to go, so not bad."
The I Love You and Aunty Ji performer added that he is looking forward to doing a gig in front of a home crowd.
"Most performances I do are abroad, so this is to show everyone back home in UK what I've been doing abroad, and I've also asked my good friend Harshdeep Kaur to perform too," he told Digital Spy.
Kaur is best known for her 2012 track 'Heer', which was seen by critics as a highlight of Yash Chopra's Jab Tak Hai Jaan soundtrack.
King will be headlining the concert at the Southbank Centre in London, alongside sufi and Bollywood singer Kaur.
The event takes place as part of the Alchemy Festival on April 20.
Watch the video for Ash King's 'I Love You' below: