Originally Posted by
Capt Fathom
From post #9, here is the relevant part.
Within UK airspace, for all stages of flight, instructions to climb or descend cancel any previous restrictions, unless the restrictions are reiterated as part of that instruction. Additionally, for aircraft on a SID, the word ‘now’ is added to climb clearances above the SID profile, to highlight that the SID vertical profile is no longer applicable.
eg ‘Jet 123 climb now FL 120’ means that the aircraft should climb directly to FL 120, ignoring the vertical profile of the SID.
Several other posters have also pointed out the UK procedure!
Is this stated in the AIP?