UK gyms dataset, ZXN Fitness
https://zxnfitness.com/data/uk-gyms/

Files: uk-gyms.csv and uk-gyms-by-year.csv
Companies as at 2026-11-01. Mapped sites as at 2026-11-11.

LICENCE
This dataset is made available under the Open Database License (ODbL) version 1.0:
https://opendatacommons.org/licenses/odbl/1-0/
You may copy, share and adapt it. If you publish a database built from it, credit the sources below and release that database under the same licence.

SOURCES AND ATTRIBUTION
1. Mapped fitness sites and sports centres: (c) OpenStreetMap contributors. OpenStreetMap data is available under the Open Database License.
   https://www.openstreetmap.org/copyright
2. Companies: Companies House, Free Company Data Product and advanced company search. Companies House sets no rules on how public register information is used.
   https://download.companieshouse.gov.uk/en_output.html
3. Postcodes and boundaries: Source: Office for National Statistics licensed under the Open Government Licence v.3.0.
   Contains OS data (c) Crown copyright and database right 2026.
   Contains Royal Mail data (c) Royal Mail copyright and database right 2026.
   https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/

WHAT THE FILES HOLD
Counts only. No company name or number, no person, no address and no postcode.
Read the method and the known errors on the page above before you quote a figure.