Hello Welly67, thanks for joining the QuickBooks Community 

I'd like to share some recent updates on the changes that we're making to the Cash Flow Planner in QuickBooks Online UK. 

The Cash Flow Planner itself is not being discontinued, however, the forecasting element (that displays projected revenue) will be removed from 18th March, 2024. 

This is to give way for a new solution coming in the near future powered by AI. The date for this is TBA, but you can keep up with the latest product updates & innovations here. Hope this helps!