Sending parcels to the Isle of Man and Channel Islands from the UK: customs, postcodes and couriers
October 27, 2026
Updated October 2026.
The Isle of Man, Jersey and Guernsey look like UK addresses, but none of them is part of the UK, and that changes how you ship to them. The Isle of Man is treated almost exactly like the UK. The Channel Islands need customs paperwork on every parcel of goods. Here is what UK online sellers need to know.
The short answer
- Isle of Man (IM postcodes): Royal Mail treats parcels from Great Britain as domestic. Use UK services and prices; no customs declaration is needed.
- Channel Islands (JE and GY postcodes): Jersey, Guernsey, Alderney, Sark and Herm. Royal Mail delivers with its UK services, but parcels containing goods need a customs declaration: a CN22 for items worth up to £270 and a CN23 above that. Documents-only items are exempt.
- Other couriers often treat both as offshore destinations, with surcharges, longer transit times or some services unavailable. Check each courier's terms before you promise a delivery date.
Why the Isle of Man and Channel Islands are different
Both are Crown Dependencies: self-governing, and not part of the UK. The difference for sellers is customs. The Isle of Man is in a customs union with the UK and shares the UK VAT area, so goods move between them much as they do within the UK. The Channel Islands are outside the UK's VAT area and run their own customs, so a parcel of goods going there is treated as leaving the UK.
Sending parcels to the Isle of Man
- No customs forms. Royal Mail classes parcels from Great Britain to the Isle of Man as domestic.
- UK VAT applies as it would to a mainland customer, because the island is in the UK VAT area.
- Allow a little longer. Parcels cross by sea or air, so delivery can take longer than to the mainland, especially in bad weather.
- Check other couriers. Many add an offshore surcharge for IM postcodes or offer slower services there.
Sending parcels to the Channel Islands
- Customs declaration on every parcel of goods. Use a CN22 for items worth up to £270 and a CN23 above that. Royal Mail also expects customs information to be sent electronically with the label.
- Describe items clearly. Vague descriptions such as "gift", "clothing" or "parts" are a common reason for customs data to be rejected. Say what the item is and what it is made of, for example "men's leather wallet", with the quantity, value, weight and, where you can, the commodity code.
- VAT works differently. Because the islands are outside the UK VAT area, sales there are normally treated as exports. Check with your accountant how this applies to your business. Jersey charges its own GST on imports, so customers there may pay a charge on delivery.
- Expect occasional delays while parcels pass through customs checks.
Postcodes to watch for
- IM: Isle of Man.
- JE: Jersey.
- GY: Guernsey, including Alderney, Sark and Herm.
These prefixes are the easiest way to spot offshore orders before they reach the packing bench, and to make sure the right service and paperwork are used.
Making it automatic
Offshore orders cause trouble when someone has to remember they are different. In StoreFeeder, shipping rules choose the courier and service for each order automatically based on destination, so Isle of Man and Channel Islands orders go on a service that delivers there without the packer stopping to check. Keep a clear customs description and commodity code against every product, so declarations for Channel Islands orders are complete before the label prints.
Isle of Man and Channel Islands FAQs
Do I need a customs form to send a parcel to the Isle of Man?
No. Royal Mail treats parcels from Great Britain to the Isle of Man as domestic, so no CN22 or CN23 is needed.
Do I need a customs form to send a parcel to Jersey or Guernsey?
Yes, if the parcel contains goods. Use a CN22 for items worth up to £270 and a CN23 for higher values. Letters and documents-only items do not need one.
Is the Isle of Man part of the UK?
No. It is a Crown Dependency, but it shares a customs union and VAT area with the UK, which is why parcels go there without customs paperwork.
Which Royal Mail zone is the Isle of Man in?
None. The Isle of Man and the Channel Islands are served with Royal Mail's UK services rather than its international zones. See Royal Mail international zones for every other destination.
Why does my courier charge more for the Isle of Man?
Many couriers class IM, JE and GY postcodes as offshore because parcels have to cross by sea or air, and they add a surcharge or use a slower service. Compare couriers on these postcodes specifically if you send there often.
Next step
If offshore orders are still being spotted by hand, book a 30-minute demo and we will show you how shipping rules handle them automatically.
Related reading
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