World No 20 Busanan, who will lead Thailand at the World Junior Championships at the end of this month, outclassed her 88th-ranked British opponent in just 36 minutes.
Former Thai No 1 Salakjit Ponsana, sister of Boonsak, also advanced into the round of 16 after she beat Denmark’s Natalia Koch Rhode 21-18 21-11. Salakjit was to play China’s eighth-seeded Deng Xuan in round two. Second seed Porntip Buranaprasertsuk was less fortunate, upset by Japanese Sayaka Sato 20-22 19-21.
In the women’s doubles first round, Porntip bounced back from the singles shock by teaming up with Busanan to beat Sarah Thomas and Carissa Turner of Wales 21-10 21-16. Narissapat Lam and Savitree Amitrapai also cruised to the second round, with a 21-8 21-8 win over Lynnlette Aung and Brodie Miller of England.