UK commercial gas booking guide
Get the right inspection by sending the complete site and appliance scope first
A commercial boiler, fixed catering kitchen, mobile LPG unit, guest accommodation and industrial installation can require different work categories and records. Start with the premises, fuel, equipment and requested outcome—not a generic certificate name.
The direct answer
Four facts are needed before a commercial gas certificate can be matched
How is every area used?
Describe the business, workplace, catering, accommodation, guest, sleeping, residential, industrial or mobile use. Say who owns and controls the gas equipment and whether the site is mixed-use.
Natural gas, LPG or both?
Identify the meter, bulk LPG tank or cylinders, regulators, pipework and isolation arrangements. LPG must be declared because the engineer needs the relevant fuel categories.
What exactly needs inspection?
List every boiler, water heater, cooker, oven, fryer, grill, heater, laundry appliance or item of plant plus flues, ventilation, extraction or interlocks within scope.
Who wants which record?
State whether the enquiry is for an inspection, named record, service, repair, commissioning or several tasks, and provide the wording used by the insurer, managing agent, client or authority.
The certificate name is not enough
The old article called CP42 a universal commercial certificate and said every business needed one annually. CP42 is commonly associated with fixed commercial catering. Boilers, workplace plant, landlord accommodation and mobile LPG can require different scopes, records and engineer categories.
Choose the inspection route
Match the record to the equipment and use
| Enquiry | Likely starting route | Scope to declare | Common wrong assumption |
|---|---|---|---|
| Commercial boiler, heater or plant | Commercial gas inspection, service or maintenance record matched to the plant. | Fuel, input/rating, appliances, flues, ventilation, controls, pipework and areas served. | That every Gas Safe engineer covers every commercial boiler or plant category. |
| Restaurant, takeaway, pub, café or fixed commercial kitchen | Commercial catering inspection and commonly requested CP42-style record. | Every appliance, flexible connection, restraint, pipework, extraction, make-up air, ventilation and interlocks. | That CP42 covers unrelated boilers, landlord accommodation or mobile units. |
| Mobile food truck, trailer, horsebox, stall or bar | Mobile catering LPG inspection and CP44-style route where appropriate. | Cylinders, regulators, hoses, restraints, ventilation, flame supervision, every appliance and the complete unit. | That a fixed-kitchen catering record covers mobile equipment. |
| Rented residential or guest accommodation | Landlord Gas Safety Record for relevant appliances and flues. | Appliances provided for tenants or guests, areas served, flues, records and any separate workplace or catering equipment. | That the word "commercial" removes residential or guest-accommodation duties. |
| Commercial LPG building or site | Commercial LPG inspection matched to the appliance and supply categories. | Tank or cylinders, storage, regulators, vapour pipework, isolation, appliance list and known installation concerns. | That a natural-gas inspection or appliance-only record covers the LPG supply. |
| Factory, agricultural or specialist industrial premises | Competence and evidence route defined from the installation, process and applicable duties. | Exact site use, process equipment, fuel, plant, supply, standards, risk controls and required evidence. | That the rules and competence route for a shop or restaurant can simply be copied. |
| Mixed-use site | Coordinated or separate records for the workplace, catering, plant, accommodation and LPG scopes. | Every use, shared supply, areas served, asset ownership, access and whether one engineer holds all required categories. | That one certificate title proves every system and duty was covered. |
Seven-step booking journey
From first enquiry to a usable inspection record
Define the premises use
List every workplace, catering, industrial, mobile, residential, guest or sleeping area and explain who owns, occupies and controls the gas equipment.
Map the fuel and supply
Confirm natural gas, LPG or both. Include meters, cylinders, bulk tanks, regulators, pipework, isolation and any recent change to the supply.
Build the appliance schedule
Send every appliance, location, manufacturer, model and data-plate photo. Include equipment that is unused, isolated, tenant-installed or outside the main plant room.
Name the work and recipient
State inspection, service, repair, commissioning or record, and who needs the evidence. Attach any client, insurer, managing-agent or authority wording.
Match the engineer categories
Check the registered business and the proposed engineer's ID card for the fuel and exact boiler, catering, pipework or other work categories required.
Confirm the written quote
Check the included appliances, record, travel, parking, VAT treatment, access assumptions, exclusions, repairs, parts and possible return attendance.
Prepare access and receive findings
Make equipment safely accessible, nominate a site contact and supply previous records. After inspection, review results, defects, limitations, safety actions and next steps.
Check the proposed engineer
Registration and work categories must both match
Check the company first
Use the Gas Safe Register's business search or HSE's check-an-engineer route. Confirm that the business details correspond with the provider accepting the work.
Check the person attending
The front of the ID card identifies the engineer and expiry date. Confirm that the person arriving is the person shown rather than relying on a company name alone.
Read the reverse
The back of the card shows the work types held. Confirm natural gas or LPG and the exact boiler, catering, pipework or other categories needed for the declared job.
Describe specialist premises accurately
HSE identifies different competence arrangements for factories, mines, quarries, agricultural premises and certain other sites. Do not book these as an ordinary shop or restaurant enquiry.
Do not ask an engineer to "sign off" somebody else's gas work
HSE says it is not acceptable for a Gas Safe registered engineer knowingly to sign off gas work carried out by an unregistered person. New, altered or incomplete work must be described honestly so the correct inspection, commissioning or remedial route can be agreed.
Inspection, service and repair
Specify the work instead of expecting one certificate to include everything
| Work type | Typical purpose | What to confirm in writing |
|---|---|---|
| Safety inspection | Assess the declared installation and record relevant checks, results, defects, actions and limitations. | Equipment schedule, inspection scope, record supplied and treatment of inaccessible or unsafe items. |
| Appliance service | Manufacturer-led maintenance, cleaning, adjustment, component inspection and appliance tests. | Named appliances, service tasks, consumables, exclusions and whether a separate safety record is included. |
| Fault diagnosis or repair | Investigate a known symptom or defect and carry out agreed remedial work. | Diagnostic labour, parts, authorisation limit, isolation, return visit and whether reinspection is required. |
| Installation or alteration | Design, install, alter or replace appliances, pipework, ventilation, flues, controls or interlocks. | Design responsibility, work categories, installation scope, commissioning and final documentation. |
| Landlord check | Complete the annual check and record for relevant rented residential or guest accommodation. | Relevant appliances and flues, record recipient, access, defects, follow-up action and separate commercial systems. |
Copy this booking brief
The information that helps Upkeepone check the right route
- Site: postcode, business type, every use of the premises and whether anyone lives, sleeps or stays as a guest.
- Responsible parties: landlord, tenant, employer, managing agent, maintenance contractor and who controls access or equipment.
- Fuel: natural gas, LPG or both; meter, tank or cylinder arrangement; supplier where relevant; regulators and isolation.
- Equipment: every boiler, water heater, catering appliance, heater, laundry appliance or item of plant and its location.
- Photos: readable data plates, appliance overview, plant room, kitchen line, LPG storage or cylinders, regulators and relevant pipework.
- Systems: flues, chimneys, ventilation, extraction, make-up air, interlocks, safety devices and known access limitations.
- History: previous records, maintenance, defects, warning notices, isolation, alterations, incidents and unresolved recommendations.
- Required outcome: exact certificate or record wording, recipient, inspection, service, repair or commissioning requirement.
- Attendance: deadline, trading hours, shutdown window, parking, congestion charges, permits, loading, keys, security and site contact.
Prepare for attendance
Prevent an avoidable incomplete visit
Unlock and clear the agreed areas
Arrange keys, escorts, permits, roof or plant-room access and safe working space. Do not move or dismantle gas equipment unless authorised and competent to do so.
Provide controls and responsible staff
Nominate someone who understands the building, appliance operation, shutdown arrangements and recent faults. Share manuals or commissioning information where available.
Declare additions and unused appliances
Tell the engineer about later additions, tenant equipment, isolated items, external appliances, mobile units and any system outside the original quotation.
Report concerns before arrival
Gas smells, carbon-monoxide alarms, unsafe notices, damaged flues, poor ventilation or an appliance already turned off must not be hidden inside an ordinary certificate request.
After the inspection
Check what was inspected, what was found and what happens next
| Review | Questions to ask | Why it matters |
|---|---|---|
| Appliance schedule | Does the record list every agreed appliance, location and identifier? | An omitted asset is not covered merely because the document says commercial gas certificate. |
| Checks and results | Are the agreed tests, observations, safety devices, flue, ventilation and other results recorded? | The evidence must correspond with the scope and equipment, not a generic template. |
| Defects and limitations | Are unsafe findings, isolation, warning notices, inaccessible equipment and limitations clear? | A record can contain defects; it is not automatically a pass or guarantee of future condition. |
| Remedial work | What must be repaired, by whom, and is another inspection or record required? | Repairs, parts and return attendance are separate unless expressly included. |
| Responsible recipient | Who receives and retains the record, and does a tenant, guest-accommodation operator or client need a copy? | Record distribution and retention depend on the applicable duty and commercial arrangement. |
Renewal and maintenance
Do not copy one annual rule across every commercial installation
Annual checks can apply
Gas appliances and flues provided for tenants or serving relevant residential or guest accommodation can fall within annual landlord gas-safety duties.
Interval depends on equipment and use
HSE says catering inspection periods may vary and should follow manufacturer recommendations, with annual inspection described as a reasonable general minimum.
Use a suitable maintenance plan
Non-residential workplace equipment still requires safe maintenance, but the Regulation 36 annual landlord record does not automatically apply to equipment used exclusively in the non-residential part.
Follow the installation-specific duties
Tanks, cylinders, regulators, pipework, pressure systems or specialist industrial plant can require separate risk, maintenance or examination arrangements beyond an appliance record.
LPG inspection routes
Choose fixed commercial, landlord or mobile LPG support
Commercial LPG gas certificate
For declared LPG boilers, catering equipment, heaters, pipework and supply arrangements within a commercial building or site.
LPG landlord gas certificate
For relevant LPG appliances and flues provided for tenants, with property, appliance and supply details checked before booking.
Mobile catering LPG certificate
For the whole declared mobile unit, including appliances, cylinders, regulators, hoses, ventilation and movement-related considerations.
UK LPG certificate hub
Compare catering, caravan, landlord, boiler, plant and appliance routes before requesting an engineer.
Possible gas escape
Do not use a certificate booking for an emergency
HSE says that if a leak is suspected, turn off the supply if safe and immediately call 0800 111 999 for natural gas or the LPG supplier for liquefied petroleum gas. Do not turn the supply back on until the leak has been dealt with by a competent person. Evacuate and call 999 where there is fire, immediate danger or doubt.
Service areas
Regular commercial gas enquiries across London, Essex and Kent
Regular work covers London, Essex and Kent. Enquiries in Hertfordshire, Surrey, Buckinghamshire, Berkshire and Sussex can also be considered when the right trade is available. Other UK areas are considered by request, subject to the premises, fuel, appliance list, engineer categories, travel and appointment requirements.
Related commercial guides
Check the requirement, scope, cost factors and renewal route
Which gas certificate does a commercial landlord need?
Separate workplace-only equipment from residential or guest accommodation, catering, plant and LPG duties.
What is a commercial gas certificate?
Understand what a commercial record can evidence and why the document name cannot replace the inspection scope.
Commercial gas certificate cost
See how premises, fuel, appliances, access and requested evidence affect a written quotation.
How long is a commercial gas certificate valid?
Check which annual landlord duties, catering guidance or workplace maintenance interval applies to the installation.
Primary UK sources
Verify competence and duties at source
HSE: check an engineerHow to find and verify a registered business or engineer and review qualifications.
HSE: Gas Safe Register and ID cardsWhy the front identifies the engineer and the reverse shows categories of work held.
HSE: non-residential and mixed-use gas dutiesThe workplace-only distinction and equipment that also serves residential accommodation.
HSE: commercial catering maintenanceCompetence, maintenance and inspection intervals based on equipment and use.
HSE: who can complete landlord checks?Registered work, engineer competence and why someone else's unregistered work cannot simply be signed off.
Booking questions
Getting a commercial gas certificate FAQs
How do I get a commercial gas certificate?
Does every UK business need the same commercial gas certificate?
Is CP42 the certificate for every commercial gas installation?
What information should I send before requesting a quote?
Who can carry out a commercial gas inspection?
Can one engineer cover boilers, catering equipment and LPG?
What happens if the inspection finds a defect?
How often do I need a commercial gas inspection?
How much does a commercial gas certificate cost?
Where can Upkeepone consider commercial gas enquiries?
Ready to request the right inspection?
Send the postcode, premises use, fuel, appliance list and required record
Upkeepone can check the equipment scope, natural-gas or LPG supply, engineer categories, access, service area and requested evidence before confirming availability and a quotation. A satisfactory result, repair cost or attendance date cannot be promised until the details and findings are known.
Possible gas escapes must follow the emergency route above.
