Demand and capacity high complexity model


This model will help you understand the demand and capacity needs of services with a complex pathway.

The high complexity model is intended for services that have more complex pathways e.g. chronic (more than one year) services in acute, mental health or community services, where patients may return for several follow up appointments at intervals which may change depending on how their condition progresses.

You can use this model to inform decision making and planning, in supporting delivery of timely care to patients. 

Demand and capacity: High complexity model (blank) XLSM, 2.0 MB

A blank spreadsheet ready for you to complete.

Demand and capacity: High complexity model (populated) XLSM, 2.2 MB

A copy of the high complexity model populated with sample data.

Grouping guidance

Grouping worksheet XLSM, 423.0 KB

We are always looking to improve our work. If you have comments and feedback, please email

For further information on demand and capcity, please see NHS England.

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