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UK postcodes
M
M40
M40 4

M40 4

M40 postcode district

Updated September 2026

Sector overview

Postcode units: 56
Coordinate coverage: 80%

Part of the M40 postcode district.

Postcode units

51–56 of 56 units

M40 4DL
M40 4DN
M40 4DQ
M40 4DU
M40 4DW
M40 4DX

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Map centre

Centred on the average coordinates of published units. This is not a sector boundary.

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Other M40 sectors

M40 7 241 current
M40 2 195 current
M40 1 182 current
M40 3 168 current
M40 8 166 current
M40 5 153 current
M40 0 144 current
M40 9 136 current
M40 6 0 current

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