Finding free parking for a camper van in London can be challenging, but there are options available. Some users suggest exploring mall parking lots, side streets, and certain parking garages. The discussion highlights the need for a permanent parking space, particularly for those looking to live in their camper van as an alternative to less desirable accommodations like hostels. The individual plans to purchase a £400 van and relies on a friend to help transport it to the parking location, emphasizing the importance of securing a suitable spot for long-term living.