UK SIC 2007 · 45320
Retail trade of motor vehicle parts and accessories (SIC code 45320)
Retail trade of motor vehicle parts and accessories is UK SIC code 45320. It sits in division 45 (Wholesale and retail trade and repair of motor vehicles and motorcycles) of the SIC 2007 list. On the August 2026 Companies House register, 13,422 active UK companies list 45320 among their SIC codes. 7,754 of them list it first. That makes it the third most used code in its division.
Division 45 holds everything to do with selling, servicing and repairing motor vehicles and motorcycles. The SIC system keeps it apart from general retail and wholesale. Independent garages under 45200 are the biggest block. Used car dealers on 45112 come next. Parts businesses split by channel: 45320 for retail counters and web shops, 45310 for trade wholesale. Franchised new car dealerships use 45111. Vans, trucks and other vehicles use 45190. Code 45400 wraps the whole motorcycle trade into one: sales, servicing and parts together.
Related SIC codes
Who prospects SIC 45320 companies
The motor trade is a staple market for insurance brokers. They need a steady flow of garages and dealers to quote for motor trade combined policies. Warranty administrators, parts distributors, MOT equipment suppliers and vehicle finance houses work it too. So do accountants who understand stocking loans. A new incorporation usually means premises, equipment and cover are all being arranged at once. Weak websites are still common among independent garages, and the poor-website filter hands local marketing firms an easy first conversation.
Lead generation for accountants & bookkeepers →How to read SIC 45320
SIC 45320 is a five-digit code, and the digits are not arbitrary. The first two, 45, are the division, wholesale and retail trade and repair of motor vehicles and motorcycles. Add the third and you have group 453; the fourth narrows it to a class, and the fifth to the subclass, which is the level Companies House actually asks a company to pick. The whole division sits under section G, wholesale and retail trade, the broadest tier there is. Reading a code left to right therefore goes from a whole sector down to one activity.
More on how SIC 45320 is built
A company chooses its own codes when it incorporates and can change them on any confirmation statement. It may list up to four, and Companies House does not check whether they are right. That is why 45320 is worth reading as a claim the company made about itself rather than as a verified fact, and why the first-position and any-position counts above differ.
Measured on the August 2026 register, the busiest registered-office post towns for 45320 are London (1,654), Birmingham (406), Manchester (281), Bradford (169) and Leicester (154). Those are registered-office locations, which is where the paperwork sits rather than necessarily where the work happens, so treat them as where to start looking rather than as a service area.
Using SIC 45320 as a filter
13,422 companies is 0.26 per cent of the 5,190,464 active companies on the UK register, and ranks 45320 third most used of the 7 codes we track in division 45. That is the pool before any filter. Whether it is a big market for you depends on what you sell, but it is the number every other filter on this page cuts down from.
More on filtering by SIC 45320
Only 7,754 of the 13,422 companies carrying 45320 put it first. The other 5,668, 42 per cent, list it behind another code, which usually means the business does more than one thing and files 45320 as a sideline. A search that matches the first code only will miss most of this population, so match on any of the four SIC positions and use a second filter to tighten it.
These companies are spread out. London is the largest single cluster at 12 per cent and the top five post towns together hold only 20 per cent, so the remaining 80 per cent sits across the rest of the country. A regional filter narrows this list without gutting it, which makes it a reasonable code to work territory by territory.
In practice the code on its own is rarely the whole filter. Pair 45320 with an incorporation date to catch companies in their first months, when they are still choosing suppliers, or with a filing deadline to reach them while the year end is on their mind. A worked example for this code: 45320, registered office in London, incorporated in the last ninety days, which turns a 13,422 company pool into a list you can write to in an afternoon. Add the poor-website filter if what you sell is a website, or a recent change of officer if you sell to whoever just took the job. Every company you pull carries the Companies House record, the director's name, a verified website and a verified email, and the ones we cannot complete are not charged.
Where SIC 45320 clusters in the UK
ACTIVE COMPANIES BY REGISTERED-OFFICE POST TOWN · COMPANIES HOUSE REGISTER, AUGUST 2026
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About SIC 45320
How many UK companies use SIC code 45320?
13,422 active UK companies list 45320 (Retail trade of motor vehicle parts and accessories) among their registered SIC codes. Each company may register up to four. Of those, 7,754 put it first. The figures come from the August 2026 Companies House register snapshot, and count active companies only.
Should a used car dealer that also runs a workshop register 45112 or 45200?
Use both. Companies House lets a company hold up to four SIC codes. Listing 45112 for vehicle sales next to 45200 for repair work is normal practice. You choose the codes yourself at incorporation. You can update them on your next confirmation statement (CS01). There is no approval process to pass.
Which code fits a business selling car parts online?
Retail of motor vehicle parts and accessories is 45320, whatever the channel. So an online parts shop belongs there, not under 47910 general internet retail. Vehicle parts are deliberately kept inside division 45. If the same company also sells unrelated goods online, it can add 47910 as a second code.
Find UK SIC 45320 companies
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