When you see the pick of your parcel, means just ready for collection by courier could be 2 or 3 days before it goes to airport(parcel acknowledged?) you then get shown a receipt of parcel which then changes to sent to overseas country, all this can take 4/5 days on its own depending on you ordering and transport collecting although Singpost do seem quick at getting it on the plane, HK post could take another day or two when it got to airport, once its landed in UK takes a further 4/5 days depending on day of week and customs. Ive had del in 6 days of ordering and 18 so you just take your chances