Utility Warehouse is a business that fits all of the criteria listed.  

The business models allows people to be just customers and or partners.  

Customers save money by bundling their services Energy (gas & electric), Mobile, Broadband and Insurance and getting great deals on all four. The more services you take the more you save.  In addition to which is the partner opportunity wherein you help other people save money on services and can get compensated up to £250 per customer.  Four customers a month could mean an extra £1,000 in your bank account.

There are practically no start up costs only a £10 joining fee to sign up as a partner

Established company which has been helping families for 27 years (since 1996) 

Award winning services: best value for money and customer service.

All business can be conducted virtually no need to visit clients in their home.