The UK Office Of National Statistics (ONS) is planning to publish new flow of funds statistics in the future. Till now, the ONS had just the SNA tables. Although the SNA has lots of details on stocks and flows, flow of funds gives more details.
ONS summary:
See our first combined set of experimental flow of funds statistics using new data sources providing improved breakdowns of how money moves around the UK economy
The article also has a discussion on sectoral balances which has the chart on top of this post.
The 2008 SNA explains this:
