Diana's husband Adam told ITV London that the public need to stand up and say "this isn't good enough."
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Commuters could be caught out by the alterations which will see many existing trains leaving stations up to two minutes early.
Dog walkers in Richmond, south west London, will now be limited to walking four dogs at a time.
The pictures, which have not been made public before show the devastation caused after the IRA truck bomb exploded.