>> culture of underinvestment which the UK public sector has been undergoing for the past 15 years.

It's going on for much longer than that. It's hard to think of a time when there was investment. It's also hard to think of a time when the individuals and teams who could have prevented this would be given the respect that they deserve. This is a problem in the UK that extends beyond the UK public sector because a lot of the management in large organisations has some cultural similarities.