Just had to book the mother onto a flight to Stornoway for tomorrow to see an uncle who's seriously unwel. These compassionate trips seem to be the most contentious amongst the FB campaign as you really need to make them.
The cheapest one way was £120 leaving GLA at 0700. Too early to make the connection so it's a £190 flight in the afternoon.
Just out of interest, I checked BA from my local airport to LHR tomorrow and £210 one way is the going rate.
Whilst the rates to the islands are high, they're comparable with domestic flights within the mainland. Booking last minute will always set you back a lot more than booking in advance.