Allsopp is best known as the host of Channel 4's Location, Location, Location alongside Phil Spencer.
'Queen of Crafts' also stars the Channel 4 programs Kirsty's Homemade Christmas and Kirsty's Celebrity Craft Masters.
Allsopp has been with Andersen for over 20 years, and together they have two sons (Oscar Hercules and Bey Atlas).
Kirstie Allsopp marries long-term partner in 'private' ceremony
Allsopp took to Instagram on Sunday (January 26) to announce that she and Andersen tied the knot in a “private” ceremony.
The wedding took place at Mayfair Chapel. Mayfair Chapel was actually used when Keira Knightley and Keywetel Ejiofor's characters got married.
Allsopp also revealed that it is the same church where her parents and grandparents were married.
The Channel 4 presenter said she had kept her wedding private, but an “invisible PAP” had published pictures of herself from the special day.
In an Instagram post, Allsopp said:
“I share a lot here so I appreciate all the kind and interesting comments, but I felt our wedding should be private.
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“Unfortunately, it turned out that there was an invisible pap, so I released some photos of our own.
“The upside is that at least we have the opportunity to publicly thank some of the lovely people who worked so hard on such short notice to make our wedding quite special. .”
She concluded by adding: