You presume I am in favor of the sole use of homeopathy, I am not. However for those who have tried it, found it effective and who wish to continue to use it rather than relying on drugs which give them distressing side effects or are ineffective.

The actual cost is tiny compared to the overall NHS budget and even if say, half those treated by homeopathy found relief, the savings in drugs costs would outweigh the cost of providing it.

Growing food requires "chemicals". Whether those should come from organic methods of production or be scattered from bags of artificially manufactured powders is one question. The other question is whether those foods should be produced from GM plants which have not been shown to be safe. Strangely enough that is one factor that the FDA supposedly requires new drugs to be.

As for those who rely on it. Well Queen Elizabeth seems to be doing rather well on it and her mother lived to over 100 and also relied on it. In addition, the Queen's horses are treated homeopathically. Perhaps you would like to explain how they generate a placbo effect.