The 'Twitter Service' is an official source of news for XH558 run by someone close to the project. This has been said:
No flying this weekend.
Aircraft serviceable but conditions of renewing permit to fly have not been met as a structural inspection of XM603 that CAA wanted has not been made.
We are as disappointed as you.
Now I'll defend things like going unserviceable as that's part and parcel of old aircraft.
But this........
