Letter
Length: 240mm max
Width: 165mm max
Thickness: 5mm max

Weight range	First Class prices
0-100g	39p

Large letter
Length: 353mm max
Width: 250mm max
Thickness: 25mm max

Packet
Length: over 353mm
Width: over 250mm
Thickness: over 25mm

Weight range	First Class prices
0-100g	£1.28
101-250g	£1.62
251-500g	£2.14
501-750g	£2.65
751-1000g	£3.25
1001-1250g	£4.45
1251-1500g	£5.15
1501-1750g	£5.85
1751-2000g	£6.55
2001-4000g	£8.22
Each additional 2kg or part thereof	£2.80

What to do next

Find out How to Buy First Class.

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