The European Yak Club web site has some more information on the current groundings.
The address is:
http://www.yakclub.net/bazar/main.php
You can also get information from Mark Jefferies at Yak UK:
http://www.yakuk.co.uk/
They are offering a fixed price package of 1130 GBP for the basic work plus all the form filling. Any additional work/defects is extra. There is a CAA fee on top (454GBP). At present they are processing about two aircraft a week. Our's is in the queue!
It's not a huge problem, just a case of forking out cash to satisfy the bureaucrats. Like all flying really!