A soft launch will see thousands of products available on a “click and collect” basis whereby customers can order products online and collect at Waitrose stores.
The range of products will scale-up towards Christmas and expand further next year, which will also be available for home delivery via Waitrose Deliver outside of London.
The deal between the sister companies will see John Lewis receive a percentage for each sale via Waitrose.com or in the small number of physical stores that will carry an extended non-food range supplied via John Lewis.
The deal also means John Lewis will only sell exclusively via Waitrose online in the UK alongside its current existing home delivery service via Johnlewis.com.
The click and collect service, which is similar to the current Argos offering, will be available to about 90 per cent of the UK.
"The idea that retailers can offer certain types of products via a particular channel is outdated, customers want and expect convenience, and that’s what this move will mean," said MD Mark Price.