First, codes are given to cities, rural communities and non-geographical services such as mobile communications and freephone services.
He proposed establishment of a national register of addresses of customers who had bought particular products. Baroness Denton, consumer affairs minister, said anyone who had bought one of the machines should telephone freephone 0800 373240 for advice.
Beale Dobie, a company which markets secondhand endowment policies, has started a freephone service for those who wish to sell an endowment.
'It's light, it's adorable,' she exclaims. Alongside her is the cleaner's price, Dollars 109.95, and a freephone number to ring for orders.
Application forms are not yet in the post offices but you can order one by ringing freephone 0800-868 700.
This includes support services such as freephone advice. Mr Wetherell says the strategy is first to approach surgical opinion leaders.