Sounds like we are back to runway alternation (i.e. 27L is back in use for landing). Good job, cleanup crew!
Of course if you want to see it on
http://lhr.webtrak-lochard.com/template/index.html you'll have to wait 2 whole days, because of those darn terrsts who hate our freedom.
Now where is the webtrak data for the 17th? It will be fascinating.