Rounding of Onset of  and Raising of Onset of 
In the older "true Cockney" accents, which is what this article seems to be about, not only is  backed, but the onset is also rounded to , according to Wells (1982b: 308, 310).  Wells calls  a "Popular London" variant.  He defines "Popular London" as the accent of suburban working-class speakers.  So according to Wells, the "true Cockney" variant is .  Because this realization starts to encroach on 's space, according to Wells, the onset of  is raised to  in Cockney.