According to eTNW, British Airways has made changes to its Executive Club programme, which will come into effect on 28 April.
For tickets booked after that date, new rules have been introduced for earning Avios and tier points, and for spending Avios.
For bookings made on or after 28 April, members will collect 0,5 Avios per mile flown in classes K, L, M, N, S and V or a minimum of 250 Avios (whichever Avios value is greater), and 0,25 Avios per mile flown in classes O, G and Q or a minimum of 125 Avios (whichever Avios value is greater).
Flexible Economy fares (Y, B and H) will continue to collect the same points and the minimum Avios will remain at 500.
The full list of changes can be found here.