Key points from article :
Five-year survival rates for rectal and colon cancer improved the most since 1995.
Advances in treatment and surgery are thought to be behind the UK's progress.
UK performed worse than Australia, Canada, Denmark, Ireland, New Zealand and Norway.
Pancreatic cancer had the lowest five-year survival rate - 7.9% in the UK.
The improvements were better for the under-75s than the over-75s.
Research by International Agency for Research on Cancer published in The Lancet Oncology.
