A scrape of Companies House data showing all businesses with a registered address where the county name given is "DEVON'. Note - This may not be a complete list, but it's a useful dataset for hacking and playing. Note 2 - the Company Name field is stripped out, but ...
Footfall counters - Devonport park, Autumn 2019. The Hoe, Christmas 2019 This is an evolving dataset being progressed by the Future Parks Accelerator programme: https://www.plymouth.gov.uk/workingcollaboratively1/dataandtech1
Plymouth City Council's register of Brownfield Land suitable for housing development in accordance with legislation and Government guidance https://www.gov.uk/guidance/brownfield-land-registers. You can see the Data Standard used here ...