From September 25, 2018 until November 25, 2018, when you transfer Membership Rewards points to Avios you will receive 30% more Avios on the total number of Membership Rewards points transferred.
For example, if you transfer 1,000 Membership Rewards points to Avios, you will be credited a total of 1,300 Avios. Avios are subject to British Airways Executive Club terms and conditions. For more information please visit ba.com/executive-club
Membership Rewards point transfers must be made in increments of 100 points, with a minimum redemption requirement of 1,000 points for each transfer. At the regular redemption rate, 1,000 Membership Rewards points = 1,000 Avios. Avios are subject to British Airways Executive Club terms and conditions. For more information please visit ba.com/executive-club.
Here is a link to the promotion.