From amazon:

When Candida Wilton arrives alone in London, divorced and rejected and without much money, she is filled with a strange sense of excitement. What can happen, at her age, to change her fortunes? How will she adjust to this shabby, violent, yet curiously attractive city? When Candida starts writing her diary, she expects that she will fill it with the small events with which she pads out her empty life, but she has always had a secret belief that despite all she is a lucky person. And she is, in a sense, right, for when an unexpected windfall brings her sudden riches, her horizons broaden: she will start, she thinks, with a trip abroad...

On Floor 3 of the Learning Centre.