This one is not quite a unicorn, but it's pretty blooming close. If it absolutely has to be there by a certain day then pick NEXT DAY at check out. Not only does this sound a klaxon in the studio, it will also bump your order up to the top of the queue and - if you checkout before 2pm - your order will be despatched by Royal Mail Special Delivery the same day, subject to artwork being completed and signed off.
Delivery is pre-1pm next-day and fully tracked all the way. A signature is required on arrival with your postman.
Before Mother's Day and Father's day, this one is a life-saver for all the last-minute Larrys and Lorraines. It is genuinely your get out of jail card. Order on Friday morning and be top gift-giver on Sunday because you know your Thisisnessie goodies will be on your doorstep on Saturday morning. No other service will guarantee that.
And at Christmas time, well you normally get two or three days to place an order AFTER the final posting day. And just when Royal Mail is in a meltdown with all the cheapskates who didn't go for guaranteed, you can sit back and let us take the strain. You might not get it next day but it will be there in time for Christmas morning.