The move will help bring in revenues for the business which was bought in 2014 by Hony Capital. Like rivals it was already experiencing headwinds prior to the coronavirus outbreak, including high business rates and wage bills, and plenty of competition for customers in a crowded casual dining market.
A number of firms have started or restarted deliverys, including pubs giant Greene King which last week said it would start selling meals and drinks via Deliveroo.
The earliest pubs and restaurants are expecting to potentially reopen sites is from July 4.
The Pizza Express delivery service, via Deliveroo, will be from the following sites: