Why do I need to choose a slot before I place my online groceries

Sainsbury's reveals exact dates to book Christmas delivery slots sainsburys book slot If you want to book a UK supermarket delivery in the run-up to Christmas, here's when festive slots are released by Sainsbury's, Tesco, sainsburys delivery slot Book Delivery · Delivery Pass Back start shopping 1Please enter your postcode using the box on the right 2Register & choose a 1 hour delivery slot

sainsburys book slot Sainsbury's customers who have a Delivery Pass could book their Christmas food order from November 23 Other shoppers were able to secure a slot