Is Lex’s doctor sub-standard?

From Mr B. Tate.

Sir, Lex writes (April 30): “The practice of selling sub-standard products is legitimate business, and always will be.” I trust Lex always bears that principle in mind when visiting doctors, dentists, pharmacists, lawyers, accountants and other honourable professionals. Or is it applicable solely to financial institutions and the sellers of crap jewellery and antiques referred to in the column? Is not this piece of Lex wisdom the kind of morality that has landed us in our present difficulties?

If the practice is legitimate, why all the protective legislation down the years starting with the first Sale of Goods Act in the 19th century?

B. Tate,

London N1, UK