Royal Mail Boxes

Royal Mail Postal Boxes - Large Letter and Small Parcel. Save on postage while keeping your deliveries secure with our range of Royal Mail-compliant postal boxes, designed to meet exact size guidelines for large letters and small parcels.

Large Letter Boxes available in brown and white styles, with options in C4, C5, C6, and DL sizes. Perfect for slim items like documents, phones, or accessories, these low-depth boxes are crafted for both efficient packing and an excellent customer unboxing experience.

Small Parcel Boxes are made to match Royal Mail’s small parcel limits, helping you reduce shipping costs without sacrificing space or protection. Made from durable cardboard, they’re ideal for eCommerce and retail use, and available with next working day delivery.