I've only just recieved one of my parcels after nearly 5 weeks from Fasttech. It will say "arrived in GB" once its got here. then its a 2-3 day wait. I've done some detective work and apparently HK customs are showing big interest in parcels containing batteries. Fasttech claim that they are thinking of switching to China post to avoid these issues but we'll have to see on that one. I guess its a case of high demand now everyones got wind of them. In fact they are a middleman for lots of smaller factories so sometimes its a case of waiting for them.
As Daniel Craig gets told in Layer Cake, "the secret of being a success in business is being a good middleman"