Wiggy, if the Jaguar incident you refer to was in Germany, yes the drogue chute went through the frame of the canopy (the perspex shattered as the canopy flexed). However, this didn't speed up the chute deployment, the ejection was in parameters--just. I do know this for a fact as I was on the board.
The Arrows prang at Akrotiri was Curly Hirst
The Lightning involved in the collision was on an exchange in France and the mid-air was with a Mirage. As stated, the damaged seat wouldn't fire so he formated on a Mirage to get VMC below.
Perhaps the unluckiest was another Lightning. Both engines were lost and an ejection attempt was made. The canopy would not leave he aircraft as a bolt in the system malfunctioned, leaving the by now twisted canopy attached at one side. He managed to dead stick it into a field but hit a tree. The collision with the tree made the canopy come off, the seat now fired with diastrous consequences, being a 90kt S&L seat--just how unlucky can you get.