This is an old revision of the document!
Useful Links
Below is a link to the OfCom flow chart for EMF compliance, anyone with an amateur radio licence, foundation or otherwise should complete this for every station they use, handheld, mobile, fixed or otherwise, if there is any chance they will operate near someone else:
https://www.ofcom.org.uk/__data/assets/pdf_file/0022/214456/emf-compliance-flowchart.pdf
Direct link to latest RSGB calculator, updated October: https://rsgb.services/public/publications/emc/emf-calculator-v0.1.2-rsgb11b.xlsx
Common misconceptions
It depends on the radio - no it's on the max allowed on the licence it depends on your power - no it's the max allowed by the licence the limits for what you do when are x watts/power at the antenna [ERP] - all factors considering if something is needed are measured in Effective Isotropic Radiated Power - it's what comes out of the antenna compared to a isotrope - so whatever your ERP is + about 2.15dB