Support activities for petroleum and natural gas mining (SIC code 09100)
Support activities for petroleum and natural gas mining is UK SIC code 09100. It sits in division 09 (Mining support service activities) of the SIC 2007 list. On the August 2026 Companies House register, 3,093 active UK companies list 09100 among their SIC codes. 2,927 of them list it first. That makes it the most used code in its division.
3,093active UK companies list SIC 09100 among their codes on the public recordCompanies House · counts as of August 2026
SIC 09100 in numbers
3,093 companies is 0.06 per cent of the 5,190,464 active companies on the UK register. 09100 is the most used of the 2 codes we track in division 09.
2,927 of the 3,093 put 09100 first, and only 166 carry it as a second, third or fourth code. The code on its own is a clean filter.
ACTIVE COMPANIES BY REGISTERED-OFFICE POST TOWN (WHERE THE PAPERWORK SITS, NOT NECESSARILY THE WORK) · COMPANIES HOUSE PUBLIC RECORD, AUGUST 2026
The five busiest post towns hold 35 per cent of them and London alone 16 per cent. Selling nationally, those towns are most of the market. Selling locally outside them, expect a small pool, so cover a county or a region rather than one town.
A worked example: 09100, registered office in London, incorporated in the last ninety days, from a pool of 3,093. Each lead you get arrives with a working website and a real email, and the director's name when the record has one. If we cannot complete one, you pay nothing.
SIC 09100 companies, as leads
Live rows from the enriched public record. Email addresses are withheld until you sign up. Phone numbers come with paid plans.
Tell us who you sell to. We find them, with a real email. 100 free leads, no card.
Companies here service extraction sites. They do not extract anything themselves.
Related SIC codes
How to read SIC 09100
SIC 09100 reads as division 09 (mining support service activities), group 091, class 0910, then the full five digits, inside section B, mining and quarrying. A company picks its own codes, up to four, and Companies House does not check them, so 09100 is the company's own description of what it does, and 2,927 list it first where 3,093 list it anywhere.
Who sells into division 09
Energy recruiters read this division as a live map of the contractor market. A new incorporation usually means an engineer has just gone independent.
About SIC 09100
How many UK companies use SIC code 09100?
3,093 active UK companies list 09100 (Support activities for petroleum and natural gas mining) among their registered SIC codes. Each company may register up to four. Of those, 2,927 put it first. The figures come from the August 2026 Companies House register snapshot, and count active companies only.
Which SIC code should an oil and gas contractor's limited company use?
Use 09100 if your work directly supports drilling or well operations. Most offshore contractors pick it. Engineers doing design or consultancy sometimes use an engineering code from division 71 instead. Both are fine. You declare your own code at incorporation and nobody at Companies House judges the fit. Agencies and insurers may still expect something that suits the sector.
Find UK SIC 09100 companies
Filter Companies House by this code. Each lead arrives with a working website and a real email, or you pay nothing. 100 free leads, no card.
✓ No card · ✓ 100 free leads · ✓ Nothing to cancel