Interesting thanks...
It's all water under bridge today but FWIW a lot depends on where that half a mile of difference in track happened.
TBH I'd expect all the aircraft tracks to pretty much be superimposed initially, from leaving the hold out over the ocean until crossing that little peninsula that juts out to the north east of the airport. That's simply because that's where the beacon is located that the aircraft aim for to comply with the poor weather/ instrument flying part of the procedure...
After passing that point I would expect to see tracks diverge - you'd expect the "landers", those who saw the runway at the beacon, to jink slightly west towards the coastline to align with the runway centre line (there's an Easyjet just doing that jink as I type.).. OTOH the "go-arounders" who have maybe caught a patch of low cloud and saw nothing, will start heading the other way, more easterly, staying off shore.
FWIW ATC don't have any input into the tracking on this, i.e. they don't give heading or steering instructions, the crew follow a published procedure for the instrument flying bit then fly the rest visually if they are OK to land.
....Sorry for all the verbiage, I know a picture is worth a thousand words but unfortunately the one or two youtube videos illustrating landing on this runway show it on good weather days when you can see and so track directly to the runway from miles out, they don't show the slightly "bendy" approach that happens in poor weather.
I've also yet to find a suitable diagram to illustrate how this works...the "plates" the crew use that depict all this are not a easy read for the uninitiated. and my artistic skills probably aren't up to presenting a "this is one I drew at home"....