We at http://www.nivets.org.uk have a more updated site. We are constantly adding to the figure of 1400 Security Forces personnel killed on active duty.
Not all were as the result of terrorist action, but are still marked on the national Roll Of Honour maintained by the RBL. One of the last names added was of a young army cadet who tripped an explosive device planted in his school cadet hut. He arrived early and was killed with two of his chums being injured. What possible justification can there be for deliberately targetting cadets as young as 13 yrs old?