This factory in the northern French city of Rouen is the source of a foul-smelling gas leak, which has been detected in the south-east of the UK.
A cloud of Mercaptan gas, which is added to municipal gas to alert people to gas leaks, accidentally leaked from the factory and drifted across the channel, prompting dozens of calls to the emergency services.
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The Duke and Duchess of Cambridge met young people who have battled mental health issues on Saturday.
Former Chancellor Lord Geoffrey Howe was Margaret Thatcher's longest-serving Cabinet minister, also taking on the role of Foreign Secretary.
Lord Geoffrey Howe is known by many for his resignation speech which was seen as the catalyst which destroyed Margaret Thatcher.