Hi anotherthing.
Not sure I understand what you meant - please help me.
My point was that in mixed-mode, if traffic goes around from 1nm 27R, piggy back on top of a departure rolling ahead of him, he needs at least 45degrees right immediately, not at 0 DME or when passing 1,500ft. I once observed a B747 on the roll, 1000m down 26L at Gatwick with a DC10 at 0.5nm. In this situation 20 or 30 degrees left was not sufficient - it was left immediately 180. Flip that through 180degrees. Imagine turning onto 360 from 0.5nm 27R?
Even if you accepted 320degrees from 1DME where the go-around might start his turn and climb from 300ft to 3,000ft. I'd say traffic holding at Sipson or a departure or go-around from Northolt would be a direct confliction to such a go-around. I am firmly of the opinion that in mixed-mode ADC must be given significant room to resolve such conflicts and the existing 27R missed approach is not good enough.
.4 ?