Browse our full range of cardboard postal boxes in the table below. We have a wide range of Royal Mail postal boxes in a variety of sizes to suit any item you need to be posted. Read our handy packaging guide if you need help understanding Royal Mail parcel sizes.
Box Size
(LxWxH)
Image
Product Info
Boxes Per Pack
Price Per box (ex. VAT)
1-11 Packs
12-19 Packs
20+ Packs
1 Pallet
Number of
Boxes
Single Wall Cardboard Box
4 x 4 x 4"
Single Wall Cardboard Box
10.2 x 10.2 x 10.2cm
Single Wall Cardboard Box
101.6 x 101.6 x 101.6mm
50
Single Wall Cardboard Box
4 x 4 x 8"
Single Wall Cardboard Box
10.2 x 10.2 x 20.3cm
Single Wall Cardboard Box
101.6 x 101.6 x 203.2mm
50
22p
21p
19p
18p
Double Wall Cardboard Box
4 x 4 x 13"
Double Wall Cardboard Box
10.2 x 10.2 x 33cm
Double Wall Cardboard Box
101.6 x 101.6 x 330.2mm
15
45p
42p
37p
34p
Single Wall Cardboard Box
5 x 5 x 2.5"
Single Wall Cardboard Box
12.7 x 12.7 x 6.4cm
Single Wall Cardboard Box
127 x 127 x 63.5mm
50
19p
18p
16p
15p
Single Wall Subscription Box (Brown)
5.5 x 4.4 x 1.3"
Single Wall Subscription Box (Brown)
14 x 11.2 x 3.3cm
Single Wall Subscription Box (Brown)
139.7 x 111.8 x 33mm
50
17p
15p
13p
12p
Single Wall Subscription Box (White)
5.5 x 4.4 x 1.3"
Single Wall Subscription Box (White)
14 x 11.2 x 3.3cm
Single Wall Subscription Box (White)
139.7 x 111.8 x 33mm
50
18p
16p
14p
13p
Single Wall Subscription Box (Brown)
5.5 x 8.8 x 1.3"
Single Wall Subscription Box (Brown)
14 x 22.4 x 3.3cm
Single Wall Subscription Box (Brown)
139.7 x 223.5 x 33mm
50
22p
20p
18p
17p
Single Wall Subscription Box (White)
5.5 x 8.8 x 1.3"
Single Wall Subscription Box (White)
14 x 22.4 x 3.3cm
Single Wall Subscription Box (White)
139.7 x 223.5 x 33mm
50
23p
21p
19p
18p
Single Wall Cardboard Box
6 x 4 x 3"
Single Wall Cardboard Box
15.2 x 10.2 x 7.6cm
Single Wall Cardboard Box
152.4 x 101.6 x 76.2mm
50
24p
23p
20p
18p
Single Wall Cardboard Box
6 x 4 x 4"
Single Wall Cardboard Box
15.2 x 10.2 x 10.2cm
Single Wall Cardboard Box
152.4 x 101.6 x 101.6mm
50
Double Wall Cardboard Box
6 x 5 x 4"
Double Wall Cardboard Box
15.2 x 12.7 x 10.2cm
Double Wall Cardboard Box
152.4 x 127 x 101.6mm
15
46p
41p
39p
36p
Single Wall Cardboard Box
6 x 5 x 4"
Single Wall Cardboard Box
15.2 x 12.7 x 10.2cm
Single Wall Cardboard Box
152.4 x 127 x 101.6mm
50
Single Wall Cardboard Box
6 x 6 x 6"
Single Wall Cardboard Box
15.2 x 15.2 x 15.2cm
Single Wall Cardboard Box
152.4 x 152.4 x 152.4mm
50
Single Wall Cardboard Box
7 x 5 x 2.5"
Single Wall Cardboard Box
17.8 x 12.7 x 6.4cm
Single Wall Cardboard Box
177.8 x 127 x 63.5mm
50
Single Wall Lidded Box
7 x 5 x 2.5"
Single Wall Lidded Box
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box
177.8 x 127 x 63.5mm
50
Single Wall Lidded Box (Printed Baby Pink)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Baby Pink)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Baby Pink)
177.8 x 127 x 63.5mm
25
38p
36p
34p
32p
Single Wall Lidded Box (Printed Black)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Black)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Black)
177.8 x 127 x 63.5mm
25
38p
36p
34p
32p
Single Wall Lidded Box (Printed Blue)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Blue)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Blue)
177.8 x 127 x 63.5mm
25
38p
36p
34p
32p
Single Wall Lidded Box (Printed Hot Pink)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Hot Pink)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Hot Pink)
177.8 x 127 x 63.5mm
25
38p
36p
34p
32p
Single Wall Lidded Box (Printed Orange)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Orange)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Orange)
177.8 x 127 x 63.5mm
25
38p
36p
34p
32p
Single Wall Lidded Box (Printed Purple)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Purple)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Purple)
177.8 x 127 x 63.5mm
25
38p
36p
34p
32p
Single Wall Lidded Box (Printed Red)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed Red)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed Red)
177.8 x 127 x 63.5mm
25
38p
36p
34p
32p
Single Wall Lidded Box (Printed White)
7 x 5 x 2.5"
Single Wall Lidded Box (Printed White)
17.8 x 12.7 x 6.4cm
Single Wall Lidded Box (Printed White)
177.8 x 127 x 63.5mm
25
33p
31p
29p
27p
Single Wall Cardboard Box
7 x 5 x 5"
Single Wall Cardboard Box
17.8 x 12.7 x 12.7cm
Single Wall Cardboard Box
177.8 x 127 x 127mm
50
Single Wall Cardboard Box
8 x 6 x 2"
Single Wall Cardboard Box
20.3 x 15.2 x 5.1cm
Single Wall Cardboard Box
203.2 x 152.4 x 50.8mm
25
Double Wall Cardboard Box
8 x 6 x 4"
Double Wall Cardboard Box
20.3 x 15.2 x 10.2cm
Double Wall Cardboard Box
203.2 x 152.4 x 101.6mm
15
Single Wall Cardboard Box
9 x 6 x 2"
Single Wall Cardboard Box
22.9 x 15.2 x 5.1cm
Single Wall Cardboard Box
228.6 x 152.4 x 50.8mm
25
24p
21p
18p
15p
Double Wall Cardboard Box
9 x 6 x 3"
Double Wall Cardboard Box
22.9 x 15.2 x 7.6cm
Double Wall Cardboard Box
228.6 x 152.4 x 76.2mm
15
52p
49p
46p
38p
Double Wall Cardboard Box
9 x 6 x 6"
Double Wall Cardboard Box
22.9 x 15.2 x 15.2cm
Double Wall Cardboard Box
228.6 x 152.4 x 152.4mm
15
C5 New Style Large Letter Postal Box
9 x 6.3 x 0.6"
C5 New Style Large Letter Postal Box
22.9 x 16 x 1.5cm
C5 New Style Large Letter Postal Box
228.6 x 160 x 15.2mm
50
16p
15p
13p
12p
Single Wall Cardboard Box
9 x 9 x 6"
Single Wall Cardboard Box
22.9 x 22.9 x 15.2cm
Single Wall Cardboard Box
228.6 x 228.6 x 152.4mm
25
40p
32p
30p
28p
C5 Large Letter Postal Box
9 x 6.3 x 0.6"
C5 Large Letter Postal Box
22.9 x 15.9 x 1.6cm
C5 Large Letter Postal Box
229.1 x 159 x 16mm
50
Single Wall Lidded Box
10 x 7 x 3"
Single Wall Lidded Box
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box
254 x 177.8 x 76.2mm
50
Single Wall Lidded Box (Printed Blue)
10 x 7 x 3"
Single Wall Lidded Box (Printed Blue)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Blue)
254 x 177.8 x 76.2mm
25
Single Wall Lidded Box (Printed Baby Pink)
10 x 7 x 3"
Single Wall Lidded Box (Printed Baby Pink)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Baby Pink)
254 x 177.8 x 76.2mm
25
74p
70p
67p
65p
Single Wall Lidded Box (Printed Black)
10 x 7 x 3"
Single Wall Lidded Box (Printed Black)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Black)
254 x 177.8 x 76.2mm
25
Single Wall Lidded Box (Printed Blue)
10 x 7 x 3"
Single Wall Lidded Box (Printed Blue)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Blue)
254 x 177.8 x 76.2mm
25
74p
70p
67p
65p
Single Wall Lidded Box (Printed Hot Pink)
10 x 7 x 3"
Single Wall Lidded Box (Printed Hot Pink)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Hot Pink)
254 x 177.8 x 76.2mm
25
Single Wall Lidded Box (Printed Orange)
10 x 7 x 3"
Single Wall Lidded Box (Printed Orange)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Orange)
254 x 177.8 x 76.2mm
25
Single Wall Lidded Box (Printed Purple)
10 x 7 x 3"
Single Wall Lidded Box (Printed Purple)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Purple)
254 x 177.8 x 76.2mm
25
74p
70p
67p
65p
Single Wall Lidded Box (Printed Red)
10 x 7 x 3"
Single Wall Lidded Box (Printed Red)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed Red)
254 x 177.8 x 76.2mm
25
74p
70p
67p
65p
Single Wall Lidded Box (Printed White)
10 x 7 x 3"
Single Wall Lidded Box (Printed White)
25.4 x 17.8 x 7.6cm
Single Wall Lidded Box (Printed White)
254 x 177.8 x 76.2mm
25
69p
65p
62p
60p
Single Wall Cardboard Box
10 x 10 x 6"
Single Wall Cardboard Box
25.4 x 25.4 x 15.2cm
Single Wall Cardboard Box
254 x 254 x 152.4mm
25
Double Wall Cardboard Box
11 x 11 x 11"
Double Wall Cardboard Box
27.9 x 27.9 x 27.9cm
Double Wall Cardboard Box
279.4 x 279.4 x 279.4mm
15
£1.16
£1.12
99p
99p
Single Wall Postal Box With Tape
11.8 x 6.7 x 0.8"
Single Wall Postal Box With Tape
30 x 17 x 2.1cm
Single Wall Postal Box With Tape
299.7 x 170.2 x 20.8mm
50
31p
30p
28p
27p
Single Wall Cardboard Box
12 x 9 x 4"
Single Wall Cardboard Box
30.5 x 22.9 x 10.2cm
Single Wall Cardboard Box
304.8 x 228.6 x 101.6mm
25
Single Wall Cardboard Box
12 x 9 x 6"
Single Wall Cardboard Box
30.5 x 22.9 x 15.2cm
Single Wall Cardboard Box
304.8 x 228.6 x 152.4mm
25
39p
38p
35p
35p
Single Wall Cardboard Box
12 x 9 x 9"
Single Wall Cardboard Box
30.5 x 22.9 x 22.9cm
Single Wall Cardboard Box
304.8 x 228.6 x 228.6mm
25
C4 New Style Large Letter Postal Box
12.8 x 8.9 x 0.6"
C4 New Style Large Letter Postal Box
32.5 x 22.6 x 1.5cm
C4 New Style Large Letter Postal Box
325.1 x 226.1 x 15.2mm
50
25p
23p
22p
20p
C4 Large Letter Postal Box
12.8 x 8.9 x 0.6"
C4 Large Letter Postal Box
32.6 x 22.7 x 1.6cm
C4 Large Letter Postal Box
325.9 x 227.1 x 16mm
50
Single Wall Postal Box
13.2 x 7.2 x 0.9"
Single Wall Postal Box
33.5 x 18.2 x 2.2cm
Single Wall Postal Box
335 x 181.9 x 21.8mm
50
27p
26p
24p
23p
Whether you're a small business, a sole trader or started selling online it’s always handy to have a decent stock of postal packaging boxes close at hand.
From large to small, square to flat we supply a wide range of cardboard postal boxes to suit your business needs. Whether you need to post a small parcel or something larger the right box for you is one click away.
We make all our mailing boxes from high-quality corrugated cardboard, helping ensure your package arrives safely. If you’re searching for Royal Mail postal boxes, don’t worry as all our cardboard postal boxes are compatible with Royal Mail guidelines.
We sell both single and double wall cardboard postal boxes giving you a wide variety of options to choose from. All our Royal Mail parcel boxes come flat-packed as standard, helping you save on space.
Use our handy Box Finder if you're having difficulty locating the right boxes for posting.
Our range of Royal Mail postal boxes includes -
Looking to buy postal boxes wholesale? If you buy in bulk from us you can take advantage of our amazing discounts.
In a rush and looking for post office parcel boxes last minute? Don't worry, we offer next working day delivery as standard. Order before 15:00pm Monday to Thursday and 11.30am Friday for next working day delivery.
Moving house or need other cardboard boxes for shipping for your business? We also supply everything from removal boxes to storage and filing boxes.