they are specifically told NOT to collect addresses or postcodes.
"The following information should be collected by the venue, where possible:
staff
the names of staff who work at the premises
a contact phone number for each member of staff
the dates and times that staff are at work
customers and visitors
the name of the customer or visitor. If there is more than one person, then you can record the name of the ‘lead member’ of the group and the number of people in the group
a contact phone number for each customer or visitor, or for the lead member of a group of people
date of visit, arrival time and, where possible, departure time
if a customer will interact with only one member of staff (e.g. a hairdresser), the name of the assigned staff member should be recorded alongside the name of the customer
No additional data should be collected for this purpose."
^^
note last sentence
https://www.gov.uk/guidance/maintaining-records-of-staff-customers-and-visitors-to-support-nhs-test-and-trace