Why take the fun out funeral ?
This site should help with everything you need to know:
http://www.humanism.org.uk/site/cms/
There are few legal controls governing the disposal of a body in the United Kingdom. The only requirement is that the death is certified and registered and the body properly taken care of, by either burial or cremation.
Burial is virtually free of regulations; individuals can be
buried in almost anything and almost anywhere. All that is
required is a death certificate signed by a doctor and a
certificate for burial from the registrar of deaths.
Many people now opt for a woodland burial in a cardboard box with little or no ceremony.