This text is concerned with the increasingly important and problematic area of financial exclusion, broadly defined as the inability and/or reluctance of particular societal groups to access mainstream financial services. This has emerged as a major international policy issue. There is growing evidence that deregulation in developed financial sectors improves financial inclusion for some societal groups (more products become available to a bigger customer base), but may at the same time exacerbate it for others (for example, by emphasizing greater customer segmentation and more emphasis on...