PPRuNe, in your notice in post #20 under amendments, it mentions that the vertical profile of the SID is cancelled if you climb the traffic above the "SID FL." In your books this provides ample opportunity for a mess. A SID is designed so as to keep you clear of inter alia, other SIDs, STARs, other airspaces and the big daddy, terrain. It also provides guidance in radio failure procedures and cuts R/T time.
I am perfectly happy with the fact that when you issue a heading before the SID is completed, the entire SID is cancelled. In this case ATC would then be responsible for terrain clearance, which was provided for in the SID. What does not sit well with me is the part where you give a climb instruction and then the vertical profile is also cancelled. Lets go further, if the vertical profile is cancelled why not just cancel the whole thing and upon receiving climb (as mentioned earlier), route direct to your first waypoint.
To say "Comply with SID and climb to FL120" would be a contradiction, because the SID clears you to FL080. Semantics, maybe, but this is suppose to be black and white.
What if you are in a procedural environment? Then you must wait for the aircraft to level of at the end of the SID before giving further climb? Or report passing the built in vertical profile level before issuing further climb? If you do climb the aircraft higher on first contact and the pilot disregards the vertical profile and fly into high terrain, then what?
The question I guess is, which parts do you adhere to and which parts do you disregard? Do you as a controller assume that he will comply with part of the SID, half of it or all of it? Where is the line and do you always have the time to consider these possibilities?
Sorry, but the UK way leaves way to many unanswered questions.