The UK in 2001 proscribed Hezbollah's External Security Organization on its list of terrorist organizations. Khan's request would entail the banning of the entire organization.
An online petition calling to cancel the annual 'Al Quds Day' rally in the British capital had garnered nearly 8.5 thousand signatures as of Wednesday.
Sadiq Kahn tells local Jewish media that his office and Metropolitan Police counter-terrorism officials had spoken with officials in Israel.
"Londoners will see an increased police presence today and over the course of the next few days. No reason to be alarmed."
Sadiq Khan met Monday evening with genocide survivors, including from the Holocaust, as part of the city’s programming surrounding International Holocaust Memorial Day on Jan. 27.