The 50 avios was actually the 100 extra shell points for activating my email. This posted on 28 Feb so is in this quarter.
I have hoped that this would post in the March - May quarter reducing the amount of fuel I need to buy to trigger the 2000 avios bonus
Filled the car up yesterday. 31 litres which will trigger my 50 shell points bonus. So I reckon I still need another 80 litres between now and 31 May to trigger the avios bonus.
Annoying because I'm also eying up a second drivers club account to get the 2000 bonus for my chavios account.