If you are the sort of person positioned to take advantage of those benefits, many of which are aimed at people with young families: some kids, but not so many that you want a larger living area. This serves to narrow the field of prospective applicants to those of a paticular social and cultural class. A single person whith hobbies outside the narrow field of acceptability will not apply. Anyone who would rather go on a backpacking trips than endulge in spa days would rather have the money than the spa benefit. In the end, such specific benifit packages tend to promote a very paticular london lifestyle.