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Cardiff’s postal box specialists — double wall, Royal Mail rated

All postal boxes are double wall corrugated cardboard and rated for Royal Mail Small Parcel. Available as single boxes or in trade packs of 10 and 50. Pay with PayPal, Apple Pay, Google Pay, credit or debit card.

⭐ All part of the exclusive Bulldog Box range — super-strong, double wall, fully recyclable

View full Bulldog range →

All postal boxes

8 products
Extra Extra Small Postal Box — Single
Royal Mail Small Parcel
Extra Extra Small Postal Box — Single
Double wall. Royal Mail Small Parcel. 205 x 160 x 125mm (8 x 6 x 4.8"). Girth + Length = 77.5cm.
★★★★★
112 reviews
£0.90
each
Call to order
Extra Extra Small Postal Box — Pack of 50
Pack of 50
Extra Extra Small Postal Box — Pack of 50
Double wall. Royal Mail Small Parcel. 205 x 160 x 125mm (8 x 6 x 4.8"). Girth + Length = 77.5cm.
★★★★★
88 reviews
£36.00
pack of 50
Call to order
Extra Extra Small Postal Box — Pack of 100
Trade pack
Extra Extra Small Postal Box — Pack of 100
Double wall. Royal Mail Small Parcel. 205 x 160 x 125mm (8 x 6 x 4.8"). Girth + Length = 77.5cm.
★★★★★
44 reviews
£60.00
pack of 100
Call to order
Extra Small Postal Box — Single
Royal Mail Small Parcel
Extra Small Postal Box — Single
Double wall. Royal Mail Small Parcel. 320 x 210 x 135mm (12.5 x 8.2 x 5.3"). Girth + Length = 101cm.
★★★★★
97 reviews
£1.20
each
Call to order
Extra Small Postal Box — Pack of 10
Pack of 10
Extra Small Postal Box — Pack of 10
Double wall. Royal Mail Small Parcel. 320 x 210 x 135mm (12.5 x 8.2 x 5.3"). Girth + Length = 101cm.
★★★★★
74 reviews
£10.20
pack of 10
Call to order
Extra Small Postal Box — Pack of 50
Trade pack
Extra Small Postal Box — Pack of 50
Double wall. Royal Mail Small Parcel. 320 x 210 x 135mm (12.5 x 8.2 x 5.3"). Girth + Length = 101cm.
★★★★★
31 reviews
£42.00
pack of 50
Call to order
Small Postal Box — Single
Best seller
Small Postal Box — Single
Double wall. Royal Mail Small Parcel. 440 x 345 x 145mm (17.3 x 13.6 x 5.7"). Volume 0.78 cuft. Girth + Length = 141cm.
★★★★★
143 reviews
£1.80
each
Call to order
Small Postal Box — Pack of 10
Pack of 10
Small Postal Box — Pack of 10
Double wall. Royal Mail Small Parcel. 440 x 345 x 145mm (17.3 x 13.6 x 5.7"). Volume 0.78 cuft. Girth + Length = 141cm.
★★★★★
98 reviews
£15.00
pack of 10
Call to order

Postal boxes — Cardiff’s Bulldog Box range

All our postal boxes are part of the exclusive Bulldog Box range. Every box is double wall corrugated cardboard — significantly stronger than standard postal boxes — and rated for Royal Mail Small Parcel.

Which size do I need?

Extra Extra Small (205 x 160 x 125mm) — perfect for small items, jewellery, cosmetics and electronics. Royal Mail Small Parcel rated. Girth + Length = 77.5cm.
Extra Small (320 x 210 x 135mm) — ideal for books, CDs, small clothing items. Royal Mail Small Parcel rated. Girth + Length = 101cm.
Small (440 x 345 x 145mm) — great for larger books, shoes and medium-sized items. Royal Mail Small Parcel rated. Girth + Length = 141cm.

Single boxes or trade packs

All sizes are available as single boxes for occasional use or in packs of 10 and 50 for regular shippers and businesses. The more you buy the better the per-box price.

We supply postal boxes to Cardiff, Barry, Penarth, Newport, Bridgend and all of South Wales. Nationwide delivery also available.