In the first, of a four-part series, we estimate the P&L for retailers using in-store picking for click and collect and home delivery.

We also cover:

• Retailers' total operating margins
• Why retailers have to offer online
• Shoppers' expectations of online groceries
• A summary of retailers' additional online revenues and costs

Read the rest of the series:
Part two: Last Milers and Third Parties
Part three: Automated Fulfilment Centres
Part four: Opportunities