Many thanks LT; I may well go for that. Currently I have had no reply only from Tortoli LIET, and the Oristano situation is from a local so should be accurate.
LIEA and LIEO are no good (no avgas), LIED shows as military and only Jet A1.
So I will go for Cagliari, with Figaro or Bastia (Corsica) as alternates, since (currently) no other airport in Sardinia seems to have avgas. Having flown direct from the UK I will have enough fuel for only ~400nm after Cagliari so can't mess around too much.
However, as usually in Italy, the fuel is owned and distributed by the local flying clubs, for use in their machines. There might be limitations in giving that fuel away.
Yeah, don't I know it, having got shafted over on that at Treviso
The "aeroclub-only avgas" is a situation not unknown in Greece, too, but at least they don't advertise they have it.
Oristano airport notam:
TESTO ITALIANO: AVGAS 100LL NON DISPONIBILE ENGLISH TEXT: AVGAS 100LL NOT AVAILABLE REF AIP ITALIA AD2 LIER 1-1