Removed unknown postcode

[ayanozturk]

This postcode is unknown according to https://www.royalmail.com/find-a-postcode

[LegendOfGIT]

Imo, it would be really helpful to add an expiration-date of fake information.
So you can generate fake information for items, which where created in a specific timespan (e.g. an purchase order)

[fzaninotto]

thanks!