Funeral costs outpace inflation; they double roughly every ten years. The biggest cost increases recently have been in areas outside the control of funeral directors.
Burial and cremation costs have risen steeply, especially cremation. This is partly down to crematoria installing expensive EU-compliant filtration equipment and partly down to councils inflating charges to compensate for budget cuts. This has had the effect of increasing profits for private operators, who now operate something like 1 in 5 crematoria.
A basic full-service cremation funeral costs around £3,700 (there are regional variations).
Burial is normally more expensive, but in some places is cheaper. Costs vary widely depending on region. You can do a rough calculation using this tool – here.