Details at: smet.org.uk/show-pmrc (sorry, no hyperlink!)
The good news - I have my flights booked.
The bad news - 2 days later the rail strikes are announced to include 25th June (although Scotrail discussions are optimistic of avoiding them).
Even worse news - 2 days ago Ryanair Cabin Crew strike announced for 25th June (although they may only affect Spanish flights).
I wait with baited breath!