From October there'll be another revision to RIDDOR. After moving the goal posts last year - the old 3 days off work due to an accident became 7 days off work - they've now simplified (reduced) the number of Occupational Diseases that need reporting and also simplified the "major accidents" that need reporting.
On the whole probably a good thing - I will of course have one of my moments in 2 years time when the HSE/Government proclaim major improvements in safety because the number of reportable accidents is lower than in 2012 - cynic me?
In many ways RIDDOR was set in the past so simplification is good for us all - but I do recognise that any past statistics are of dubious value to compare going forwards.
You can download a free draft of the new Regs/Guidance here - HSE Downloads