In a busy office or warehouse, your labelling system needs to be seamless. At Northern Label Systems Ltd, we provide a comprehensive range of high-quality compatible labels specifically engineered for Seiko Instruments Smart Label Printers. Whether you are using the latest SLP650 series or the dependable SLP400 range, our labels offer the perfect marriage of quality and value.
As the UK’s leading label specialist with over 20 years of experience, we ensure that every roll we stock meets rigorous standards for print clarity and adhesive strength. Transitioning to our compatible range allows you to slash your overheads without ever compromising on the professional finish your customers expect.
Contact us today for expert advice and competitive pricing on bulk orders

Our Seiko compatible label inventory is precision manufactured to the specifications of your Seiko Smart Label Printer. The supported models include:
- SLP 600 Series: Full support for SLP620, SLP650, and SLP650SE.
- SLP 400 Series: High-performance labels for SLP420, SLP430, and SLP440.
- Legacy Models: Perfect fitment for the SLP450 and more.
We carry all the industry-standard sizes you rely on, including:
- Address & Shipping: 11352 (25mm x 54mm), 99012 (36mm x 89mm), and 99014 (54mm x 101mm).
- Large Format & Folders: 99019 (59mm x 190mm) and S0929100 (51mm x 89mm).
- Small & Multi-purpose: 11353 (12mm x 24mm) and S0929120 (25mm x 25mm).
- Coloured Options: Stand out with Blue (99010BL) or Green (99010GR) labels for easy filing and organisation.
Why Choose Our Seiko Compatible Labels?
- Significant Cost Savings: Drastically reduce your cost-per-label compared to original brand-name rolls.
- Permanent & Removable Options: From ultra-secure permanent adhesive to Removable Adhesive (11355 / S0929120) for temporary applications, we have the right tack for every surface.
- UK-Wide Free Delivery: Benefit from our policy of free delivery on UK orders over £100+VAT in value.
FAQ’s - Seiko Smart Label Printers (SLP) Compatible Labels
Q. Are compatible labels safe for my Seiko Smart Label Printer?
A. Yes. Our labels are precision manufactured to the technical specifications of your printer. They use high-quality thermal paper that won't damage your printhead or cause unnecessary wear and tear.
Q. Do I need to buy ink or toner for these labels?
A. No. Seiko SLP printers use direct thermal technology. The image is created by heat, so you only ever need to replace the labels themselves.
Q. What is the difference between permanent and removable adhesive?
A. Permanent adhesive is designed for long-term use and is difficult to remove without leaving residue. Removable adhesive allows you to peel the label off cleanly, perfect for price tags or temporary files.
Q. Can I get coloured labels for my Seiko printer?
A. Absolutely. We stock several sizes in Blue and Green to help you with colour-coding your filing system or highlighting priority shipments.
Q. Do you offer bulk discounts for high-volume users?
A. We do. As a major UK supplier to logistics and manufacturing firms, we offer highly competitive pricing for bulk purchases. Please contact us for a bespoke quote.
Q. How fast is delivery?
A. With the largest stocked range of labels in the UK held in our Preston warehouse, we are able to offer fast shipping to London, Manchester, Birmingham, and across the country, usually dispatched same day. If you have a specific timely logistical need, do contact our team before ordering to ensure we can meet this.
Q. What if I can't find the specific size I need?
A. If you don't see your required dimensions listed, give us a call on 01772 817546, and can likely source exactly what you need.
Contact us today for expert advice and competitive pricing on bulk orders