For those who know Wiley, he is notoriously 'generous' with his music and has been known to release not one or two tracks but a whole albums-worth of his own work to his supporters via zip file links on Twitter for free! My sources, however, can confirm that this BOT remix has definitely not been heard outside of his camp.
As grime music was slowly diluted in a bid to make it acceptable for the mainstream, the artists who once pioneered this gritty genre turned to electro beats and vacuous female backing singers to sell their records. Grime became confused. The usual jaw rattling bass, rapid snares and angry lyrics had now been replaced with soft synths, pop melodies and soppy lyrical content that made Mills and Boon look savage.