Britain last week banned the Chinese-owned video app on government phones.
“Cyber security is a top priority for parliament,” the spokesperson added.
The United States, Canada, Belgium and the European Commission have already banned the app from official devices.
TikTok has come under increasing scrutiny due to fears that user data from the app owned by Beijing-based company ByteDance could end up in the hands of the Chinese government, undermining Western security interests.
The British parliament’s ban was announced as TikTok’s chief executive faced questions
from U.S. lawmakers who are convinced the app should be barred for being a potential national security threat to the United States.