An Amazon Prime delivery van remains stuck in the mud in the Thames Estuary near Southend, after its driver followed satnav directions into the sea. Security guards working for QinetiQ, the company that manages Foulness Island on behalf of the Ministry of Defence, told Your Southend that the driver had been trying to access the island yesterday evening to deliver a parcel. The delivery driver abandoned the van after it became firmly stuck in the soft mud and the tide began coming in. They confir