A small trick to save some points when redeeming for Avios (BA / IB)

Straightforward:

6500p = 2000 BA Avios

but if you redeem like this:

4000p = 1500 IB Avios
2000p = 500 BA Avios

you'll get the same 2000 Avios and save 500 points in the process. You can combine BA & IB Avios at your leisure.