Cossack, now we're getting to the nub of it. To go back to my original posting, does this then mean that a PPL (without IR) cannot go through class E airspace at night - which is how I understand things - and so can only transit the Scottish TMA between Edinburgh and Glasgow CTRs by avoiding all the class E, either by nipping under it (Bookworm what exemption do you mean; if it's the SVFR exemption from the 1500 ft rule I'm aware of it but we're not on an SVFR clearance so that wouldn't apply. If it's another exemption please elucidate) or by climbing to 6000 ft and going over it to get into the class D on an SVFR clearance. It just seems absurd that you're being pushed below 2500 ft or above 6000 ft amongst all the heavies to get through legally, see what I mean ? Or am I missing something ?