Interparcel (Courier agent for FedEx have stated:
This is a courtesy email to advise you that FedEx have attempted to deliver your parcel, but no one was available to accept the item. FedEx will attempt again on the next working day.
Please note that the carriers do not always contact us regarding collections or deliveries. Please make sure that you keep an eye on the online tracking for updates.
Please do not hesitate to contact me if you have any other queries.