Like her or loath her Thatcher did get a grip on inflation that she, rightly, identified as the main block to economic stabilty. Something that has stayed in place until the last 6 or 7 years. The medicine was harsh and uncompromising, however it was necessary.
Did she though ? even after her one trick pony of selling off all the family silver(yet keeping all the associated debt) and when even after years of her harsh medicine inflation was 3X that of comparable western economies and the gap was rising not falling....leading to another usual repeat of the boom bust cycle .