Whetstone Post Office will be closed for one week next month in preparation for an upgrade and longer opening hours.
The High Road branch is being modernised with an open-plan layout and additional serving positions, as well as having its opening times increased by 20 hours.
The Post Office will be closed from 12.30pm on Saturday, February 15, until it reopens at 1pm on Friday, March 7.
Following the upgrade work, the branch will open between 9am and 5.30pm, Monday to Saturday, with Post Office services available at the retail counter from 7am to 6pm, Monday to Saturday.
The upgrade is part of a three-year investment programme, the largest in the history of the Post Office, which will see around half of the UK stores converting to new-style branches.