SIC code 53100 covers postal activities under universal service obligation activities in the UK, with 1,417 active companies currently registered. It falls under Section H (Transportation and storage) of the UK SIC 2007 classification system. The average company age is 6.2 years.
SIC code 53100 stands for "Postal activities under universal service obligation" under the UK Standard Industrial Classification (SIC 2007) system. It belongs to Section H — Transportation and storage. Companies use this code when registering with Companies House to indicate their primary business activity.
There are currently 1,417 active companies registered under SIC code 53100 in the UK, out of 1,823 total registrations (including dissolved companies).
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Data sourced from Companies House, HM Land Registry, FCA Register, and 50+ government databases. SIC classification follows the UK Standard Industrial Classification of Economic Activities 2007 (SIC 2007). Last updated: 2026-04-05.