O
Campervan Converter in Doncaster, South Yorkshire
OSI Vans is a UK-based specialist in campervan conversions, offering a wide range of services from basic carpet lining to full turnkey builds for various van models.
OSI Vans operates as a dedicated campervan conversion company in the UK, focusing on transforming a variety of popular van models into functional and aesthetically pleasing day vans and full campers. The company has established itself by providing comprehensive services, catering to different budgets and requirements, from entry-level interior enhancements to advanced, fully-equipped living spaces. Their expertise spans across several key areas of van customization, ensuring a tailored approach for each client's vision.
The company's service offerings are extensive, covering everything from fundamental interior upgrades like carpet lining, soundproofing, and insulation, to complex full campervan conversions. They specialize in popular models such as the Volkswagen Caddy, VW Transporter (T5, T5.1, T6, T6.1, T7), and Ford Transit Connect/Custom, as well as Vivaro/Trafic/Primastar and Citroen Relay. OSI Vans provides detailed packages for both basic and advanced full conversions, which include pop-top roofs, bespoke kitchen units, rock and roll beds, comprehensive electrical and water systems, and diesel heaters. Additionally, they offer a wide array of individual upgrades, allowing customers to enhance specific aspects of their vehicles, such as custom leather upholstery, starlight headlining, exterior styling, and crash-tested seating solutions.
OSI Vans distinguishes itself through its transparent pricing structure, with detailed costs for various services and packages openly published on their website. They employ a tried-and-tested 3-stage method for soundproofing and insulation, highlighting their commitment to quality and comfort. As authorized Planar heater installers, they ensure professional and reliable heating solutions. All full camper builds undergo an external quality inspection, underscoring their dedication to delivering high-standard, safe, and comfortable campervans.
Reviewed by Joe Tannorella · updated May 2026 · Listing on camperbrain.com
£13,995 – £16,295
I purchased a newly sprayed pure grey rear spoiler for our t6.1 van. Oli fitted it for us the same day at no extra cost. Colour matches lovely. Very happy. Already looking at having other work booked in. Many thanks.
OSI Vans recently converted our transporter to a Kombi. They added sliding windows, triple bench seat, carpet and lined roof with spots. Oliver was really helpful with advising on what would most appropriately suit our needs and didn’t oversell and tell us what we should do. He was really accommodating. The turn around was 2.5 days and the finish is excellent. Can’t wait to get a camping trip in. Will definitely work with Oliver and his team again. Thanks, Tom
Amazing team here! From dealing with my initial enquiry of converting to a a 2+1 kombi Oliver told what they could offer clearly told me how much it would cost and how long it would take and still went above and beyond! Showed me options and around workshop and finished vans. They fully lined and used sound deadening and insulated and matching the front seat pattern. Very happy will return👌
Had my new to me T6.1 booked in as OSI Vans around 2 weeks ago. I had a full Kombi conversion including 3 stage sound deadening and insulation, 2 side opening windows, rear barn door windows, carpet lining, suede roof, LED lights and USB points. Oliver & Dan are both spot on, welcomed us down to look at other work before we booked in and talked me through everything, will 100% be back for any other work I need! Book with confidence with these guys 👌👌
OSI Vans are dedicated Volkswagen specialists with a significant passion for the brand. With over 12 years of experience, the company focuses on producing high-quality [VW campervan conversions](/services/full-conversions). This specialization allows them to deliver some of the industry's finest work. While they also build out day vans and customised work vans, their core expertise lies with Volkswagen models.
OSI Vans is based in [South Yorkshire](/campervan-converters-south-yorkshire), situated between the Doncaster and Scunthorpe areas. This central location provides convenient motorway access for customers traveling from across Lincolnshire and Yorkshire. For precise directions, clients can consult the interactive map available on the company's official website.
Beyond complete conversions, OSI Vans provides a range of [upgrades and additions](/services/upgrades) for existing vans. Through a partnership with Willsecure Systems LTD, they also facilitate expert installations of towbars, reversing cameras, dash cams, and parking sensors. This collaboration also covers security systems like alarms, immobilisers, and trackers.
Tell them what you're looking for and they'll be in touch directly.
Is this your business?
Claiming is free — enquiries start on a paid plan.
Top notch service from OSI from start to finish. Excellent throughout the whole process from initial inquiry to actually booking in and getting the work done. Would 100% recommend to anyone looking to get anything done to their van. I’ll be heading back in the new year to have more suede work added to the interior at the front of the van 👌🏼
OSI Vans aims to offer highly competitive pricing without compromising on build quality. Since every project is unique, the final cost depends on the specific design, materials, and features requested. To get an accurate quote, potential customers should contact OSI Vans directly to discuss their project in detail.
Yes, complete customization is central to the service at OSI Vans. The company's mission is to make a client's dream vehicle a reality, whether it's a full camper, a day van, or a unique work vehicle. They work closely with customers to ensure the final build is perfected to their exact vision and requirements.
OSI Vans sets itself apart with its deep specialization in Volkswagen vans and over 12 years of focused experience. The company's main priority is the quality of its workmanship, ensuring every build meets the highest industry standards. As a result, they are able to combine this commitment to quality with affordable and competitive pricing.
There are several ways to get in touch with OSI Vans. You can call them directly at 07506 724 141 for immediate assistance. For written communication, they are responsive to text messages, WhatsApp, and messages through their Facebook page. A contact form is also available on their website for submitting detailed enquiries.
Yes, OSI Vans facilitates the professional installation of various accessories. Through their partnership with the specialists at Willsecure Systems LTD, they offer fitting for towbars, alarms, immobilisers, and parking sensors. This ensures these critical additions are installed with expert knowledge and care.