Well...
They came in early and no one posted an update on the forum
They came in mid day and no one posted an update on the forum
They came in late and no one posted an update on the forum
In all 3 instances, cards could have been delivered to OcUK you just wouldn't be aware.
Like someone said above, people have spent time calling, emailing and submitting webnotes... this adds a delay. The more likely scenario is they've working flat out in the warehouse and are scrambling as many orders together as humanly possible. I've no doubts that OcUK will come forward with some information that'll put people's mind at ease / annoy those who are 1000+ in the queue