'I climb into lorries three times a day' per BBC News, a question that the BBC don't ask

This BBC report https://www.bbc.co.uk/news/av/world-europe-45257005/migrant-crisis-i-climb-into-lorries-three-times-a-day runs:

'Police in a small French port town say hundreds of migrants are risking their lives every day to try and get to England.

Around 200 mainly Sudanese refugees are camping around Ouistreham because of the ferry route to Portsmouth.

With a heavy police presence in Calais, they are targeting ferries running from the town as a potentially easier way to hide on vehicles headed for the UK.'

Why do the BBC not ask why "hundreds of migrants are risking their lives every day to try and get to England" when they are already living in France? Why are these "mainly Sudanese" "risking their lives" to go from one relatively safe EU-member country to another? Why do the BBC not explore the pull-factors? 

I think we know the answers to the above questions but that is not in accord with the BBC / left-wing narrative and plan for the UK.