M&S Decaf Tea A full flavoured, decaffeinated tea. It's perfect for late night brews served with a splash of milk. Strength 3, medium. 80 tea bags per pack. Our master blenders assess and taste each individual batch of tea, passionately made by our local producers. By sourcing from the best Fairtrade certified tea gardens from around the world, the very best flavours are combined to create our signature M&S blends.