Iliffe ^{Reference Iliffe1} makes important points about complex conditions but offers a very limited view of the possibilities for commissioning dementia services.

Any qualified provider broadens the options and there is no reason why the whole system needs to be commissioned from a single provider. In acute hospitals, services may be provided by liaison psychiatry or physicians or both. Liaison psychiatry could extend into the community ^{Reference Parsonage, Fossey and Tutty2} or intermediate care services. In care homes, where frailty is common, there might be an alliance of community geriatrics and old age psychiatry with the independent sector. Home treatment may include joint health and social care, memory services, and care advisors.

What is crucial is that the whole system has to be commissioned and commissioners see the whole system and bind the component parts together. This point is made in the National Institute for Health and Care Excellence dementia commissioning guide with reference to dementia clinical networks. ³ Networks define a whole system where local providers are clearly identified to meet local need and operate a unified, interactive dialogue, not a care pathway that patients do not follow.

The new commissioning environment creates an exciting opportunity to think more imaginatively and this will be needed to meet the dementia challenge. This has to be more than the ‘is it the GP or the specialist?’ question.