He suffered the devastating effects after being given the combined measles, mumps and rubella vaccine when he was 13 months old.
But now, in a judgment which will give hope to hundreds of other parents whose children have been severely affected by routine vaccinations, a medical assessment panel consisting of two doctors and a barrister has concluded that MMR was to blame.
In a six-page judgment, they said: ‘Robert was a more or less fit boy who, within the period usually considered relevant to immunisation, developed a severe convulsion... and he then went on to be epileptic and severely retarded.
‘The seizure occurred ten days after the vaccination. In our view, this cannot be put down to coincidence.
'It is this temporal association that provides the link. It is this that has shown on the balance of probabilities that the vaccination triggered the epilepsy.
'On this basis, we find that Robert is severely disabled as a result of vaccination and this is why we allowed the appeal.’
The ruling will reignite the debate over the safety of common childhood vaccines, although it makes clear that Robert’s case does not involve autism.