There is another thread about this
I have 55K AVIOS expiring within 5 months...been keeping them for a rainy day :) Apart from redeeming a QF flight or buying AVIOS, any suggestions for an easy and cheap way to keep my AVIOS from expring? thanks
www.australianfrequentflyer.com.au
If you buy something it will take more than two weeks to show up so you will need to spend
https://www.britishairways.com/en-gb/executive-club/spending-avios Here is the link to spending Avios
If you know someone else with Avios you may be able to send them some or get them to send some to you
Your Avios stay with you as long as you collect, spend, purchase or share at least one Avios every 36 months — any longer and your Avios will expire and be removed, so remember to take action before those three years are up.
Good luck