Division 33 of the UK SIC 2007 list. It holds 6 codes, listed in full below with the number of active UK companies filed under each.
This division keeps industry's equipment running. It does not make it. UK registrations spread across several large codes. Machinery repair is 33120. Electrical equipment repair is 33140. Repair of other equipment is 33190. Installing industrial machinery is 33200. Transport has its own codes, including 33160 for aircraft maintenance and 33170 for other transport equipment. The typical company is a mobile engineering firm or a small specialist workshop. A time-served engineer usually started it. They serve factories, sites and operators across one region.
Field service work runs on scheduling, quoting and job management. That makes this a good place to look for software firms selling those tools, above all where engineer headcount is growing. Parts distributors, calibration houses, tool suppliers and van leasing providers work it too. Almost every firm here runs vans. A new incorporation is usually an engineer going self-employed with one anchor customer. They need insurance, invoicing tools and a proper website within weeks. The poor-website filter flags that exact stage. Aviation maintenance firms under 33160 are a separate, more heavily regulated niche.
33120, Repair of machinery33140, Repair of electrical equipment33160, Repair and maintenance of aircraft and spacecraft33170, Repair and maintenance of other transport equipment n.e.c.33190, Repair of other equipment33200, Installation of industrial machinery and equipmentDivision 33 is about industrial machinery and equipment. Think repairing production lines, installing factory plant and maintaining commercial kit. Division 43 is about building services: electrical wiring, plumbing and HVAC inside buildings. An engineer installing a packaging machine uses 33200. An electrician wiring the factory uses 43210. Firms doing both can list codes from both divisions, within the four-code limit.
Pick the one that matches the kit you work on most. Use 33120 for mechanical machinery and 33140 for electrical equipment. Use 33190 when the mix defies a label. Getting it perfect matters less than you might think. The codes are self-declared, unchecked, and easy to amend on the confirmation statement. Choose the closest fit now and refine it as you settle into a specialism.
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