Reds
As I understand it everything that could be done was by the guys at Wyton trying to track down the TRA intruders. All relevant frequencies were used, many phone calls made, etc.
I didnt see Mr CAA but understodd that he was 'on a roll' trying to track down the culprits - and he did check the Notams before flying in to Wyton!. If this was a local gliding club I am sure the club would have been advised of the TRA and if responsible would have placed the notification on the notice board to draw it to the attention of pilots flying locally.