The point I was making was I think Luton is the only Airport that states 'warning stepped climb' as part of the clearance. I appreciate other Airports have them, but do they give a warning?
All Gatwick SIDs with step climbs (LAM, DVR, CLN, SAM, BOGNA, HARDY, KENET, BIG and SFD - all but 2!) have the 'Warning - Stepped Climb' warning printed on the plates but it's not issued over the RTF when the SID is passed.
With these SIDs the DVR, LAM and CLN are the worst for level busts on departure, and of those the DVR is
the worst. You have been warned...