Brian's arithmetic is correct,Scrumpy.There are three 8hour shifts in a day.3x16=48
We are members of the RLA & the NLA.
We only operate in high-end properties in the South East area so we don't have any of the issues that you'll see on the TV programmes such as Nightmare Tenants, Can't Pay etc but we do get almost daily reports from our associations & 40 people in a 3 bedroom property is not uncommon, especially in parts of London.
What happens is that the landlord gets a letting agent to find a tenant & manage the property but the tenant then, unkown to the landlord or the agent, sublets to 40 other people.