Argos has opened its first Underground store 'Argos Collect' which has been designed to give customers convenient access to 20,000 products as they travel around the transport network. Around 4.2 million journeys are made on London Underground every day and it is the digital customer that they are aiming these stores at who want the convenience of click and collect.The new Cannon Street store covers only roughly the size of a large kitchen in a typical family home. It will be open from 07:30 to 19:00 Monday to Friday, and 09:00 to 18:00 Saturday.