contact25.com offer a delivery estimate on every product page. This is our target but not a guaranteed delivery day. We use 3rd party delivery providers who might not deliver on their deadlines.
The majority of small and light parcels travel via Royal Mail either RM24 or RM48. Larger items often go via Evri and huge items, DHL.
Sometimes items are 'lost in the post'. Other times, items are delivered to a neighbour without a note through the door. Sometimes, items are delivered to another family memmber who doesn't communicate! We've seen it all, but happily these issues only affect a very small number of our customers. We usually give 10 business days before declaring an item 'lost in the post'. Most times however, we can provide delivery confirmation or help you locate it (if it's at your local Royal Mail sorting office).