Found 14th Jan
If you buy 3 Amazon Echo Dots you get 1 free with code DOT3PACK. Add 3 to basket and use code at check out. The code has been active in the past for £20 off a 3 pack, it was discontinued when the price was reduced to £34.99 each. Now an even better deal as works out at £33.33 each. Great to use for multi-room speaker control for those who want use existing speakers rather than purchase Sonos etc.