The measures came into force on Thursday, November 5, and last until December 2.
It means that shops and businesses have had to shut once again, however this time non-essential retail can remain open for online delivery and click-and-collect.
Other Lockdown news: These trusted businesses are offering online shopping during lockdown | Full list of businesses which will be allowed to open in Portsmouth during coronavirus lockdown
We sent one of The News’ photographers down to Commercial Road to see which businesses have remained open.
Click through the gallery below to see what is open in the Portsmouth city centre during lockdown – and any restrictions in place.
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17. Taco Bell
Taco Bell in Commercial Road, Portsmouth is open for takeaway, click and collect and delivery only during the lockdown. Picture: Sarah Standing (051120-7775) Photo: Sarah Standing
18. McDonald's
McDonald's in Commercial Road, Portsmouth is open for takeaway and McDelivery during the lockdown. Picture: Sarah Standing (051120-7770) Photo: Sarah Standing
19. Premier Convenience Store
Premier Convenience Store in Commercial Road, Portsmouth is open during the lockdown. Picture: Sarah Standing (051120-7766) Photo: Sarah Standing
20. Dim Sum Hut
Dim Sum Hut in Commercial Road, Portsmouth is open for delivery and you can order from apps such as Just Eat and Deliveroo. Picture: Sarah Standing (051120-7778) Photo: Sarah Standing