I'm surprised that this latest news hasn't drawn more comment. If I could just add to the excellent posts of Engines and Chug.
At the time the systemic failures came to a head;
1. Gliders and Hawks shared the same Type Airworthiness Authority.
2. Neither had a valid Safety Case.
3. Hawk XX177 (Flt Lt Sean Cunningham) and Glider grounding would both have been avoided by implementing the mandated (in all aviation contracts) Defence Standard 05-125/2, and its accompanying Specifications 1-20.
If you want to go back further, the same applies to Tornado ZG710, Nimrod XV230 and many more.
There's a lesson there but MoD doesn't want to see it, its reaction being to cancel the Def Stan without replacement. The result was that Gliders had no appointed Design Authority. This news release tells us that under the new arrangement, Grob is once again the appointed DA to the new owners, and lo and behold it will take a year to resurrect the build standard, allowing the aircraft to be recertified, made serviceable and even upgraded. As stated so many times here, the solution was simple. It just needed MoD to follow its legal obligations. It didn't, but many postholders made false declarations that they had. As they did in the Sean Cunningham case, and all the others. After so many fatal accidents, so much wasted money, and the Nimrod and Mull of Kintyre Reviews citing the same failures, that MUST have been a conscious decision. Overseen by MoD's 'independent' MAA.