At present overall costs of cremation and burial are about 300% plus more. Despite the high cost many people prefer their relatives to be buried. This is a very difficult problem , as someone said way back in 1901 SE23 was full of green spaces.

No one is suggesting surely the removal of existing graves, especially in places like Ieper, but maybe we need to look at future burials based on lack of space in London. Perhaps a tax as well raising the difference to say 500% over cremation might help.