UK safe ratings are commonly discussed as a cash amount and a higher valuables amount, but the policy decides whether that shorthand is accepted. The same safe can be acceptable for one premises and insufficient for another because stock, alarms, location and access control change the risk.
A burglary-rated safe resists attack. A fire safe limits heat transfer for a tested time. Paper, digital media and magnetic media have different heat and humidity tolerances, so one fire label should not be stretched across every content type.
Many smaller safes and security cabinets only make sense when anchored into suitable structure. If the fixing point is weak, hidden services prevent proper drilling, or the safe can be lifted away, the published rating may not answer the real theft risk.