Many thousands of families have benefited directly from IVF since the birth of Louise Brown in 1978.
However, fertility treatment was not always as readily accepted as it is today and had it not been for Bob's scientific innovation and his passionate commitment to ensuring the technology was made available to all those who needed it, many parents would have been left childless.
Few scientists can say that their work has impacted on mankind in such a meaningful way. He was an exceptional man whose compassion and tenacity will be dearly missed.
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Tuesday: A cloudy, cool and dull day with outbreaks of heavy rain becoming lighter and patchier.