The UK is lagging behind western Europe when diagnosing brain tumours in patients aged between 2-24-years-old, with data showing Britain is 50% slower than the rest of the continent.
At least 500 young adults and children are diagnosed with a brain tumour and 125 are killed by them each year, charity HeadSmart says.
World Health Organisation (WHO) statistics show that the UK has the highest number of child deaths compared to other Western European countries.
Health campaigners are calling on Parliament to do more to help children and young adults who may be suffering from a brain tumour.
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It happened at a rail depot near Daventry in Northamptonshire.