Many tourists may have Victoria Peak, Ocean Park or Lantau Island on their Hong Kong itineraries, but in a sign of the times, one tour company has added something new: protest tours.

Hong Kong Free Tour, which takes visitors to see "the real Hong Kong", including its poorer districts, has seen an opportunity at a time when anti-government unrest has hit the tourism industry hard.

"Both locals and international travellers are welcome to join," reads the online description for the new tours. "Please note that you are responsible for your own safety when you join this tour."