In the UK civil traffic world, you can only have a SID inside regulated airspace. Outside regulated airspace you get SDR's which do NOT clear you to enter controlled airspace, ( and are not assessed for obstacle clearance) but take you in the correct direction.
In the military world there are SIDs in class G airspace, but once again they do NOT clear you to enter controlled airspace, nor are they (like SDRs) designed to separate you from other traffic. Unlike SDRs they ARE assessed for obstacle clearance