Yes from LHR.
Funnily enough today's 9:10 flight had 7 upgrades available at check-in 24 hours ago, I choose the wrong date to travel!
Going forward I will buy a flex ticket (less miles to upgrade), but before I do I will check on flyertalk to see which flights have the upgrades and then pounce like there is no tomorrow!
Between the family we have 180,000 skyward miles between the 5 of us, they start to expire from mid 2016 to 2017, so want to use them up next year.