Shell awards are as follows: Fill up in Jan/Feb/Mar, Avios on account in June. Fill up in Apr/May/Jun, Avios on account in September. Fill up in Jul/Aug/Sep, Avios on account in December. Fill up in Oct/Nov/Dec, Avios on account in March. Bonus Avios will be awarded within 28 days of the end of each quarter. Shell Bonus Avios will be awarded within 28 days of the Shell award appearing in your account and will be backdated to include the month in which you collected the Shell Drivers' Club points and not the date they appeared in your Avios account.
So there it is, clear as MUD
