Fresh fears have been raised over the role of mobile phones in brain cancer after evidence revealed rates of a malignant type of tumour have doubled in the past two decades.
Charities and scientists have called on the Government to heed long-standing warnings about the dangers of radiation after a fresh analysis revealed a more "alarming" trend in cancers than previously thought.
However, the study, published in the Journal of Public Health and Environment, has stoked controversy, and some experts say the rising rates of cancers could be caused by other factors.
The research team set out to investigate the rise of an aggressive and often fatal type of brain tumour known as glioblastoma multiforme (GBM).
They analysed 79,241 malignant brain tumours over 21 years, finding that cases of GBM in England have increased from around 1250 a year in 1995 to just under 3000.