One...my thoughts exactly..
Butfor the OP as I understand it on the 1st it was pretty windy at times on Saturday, possibly on or close to 744 cross wind limits..plus it gets bumpy as heck on short final to 27R with that sort of wind. Possibly a reason for the go-arounds, and with LHR being BA's home base their fleet will probably log the greatest number of go arounds at LHR.
As for the other stuff, no idea, possibly medical,and again, now you've taken an interset in BA...