Here's some more on the WHO suggesting an external origin as, yes, the BBC is a little weak on this point.
news.sky.com/story/covid-19-extremely-unlikely-novel-coronavirus-came-from-wuhan-lab-incident-says-joint-mission-12213121
Specifically:
"Investigators should now look at studying bats outside of China to see if they carry genetically similar viruses, the WHO's Dr Peter Ben Embarek said."
"China's National Health Commission spokesperson Professor Liang Wannian also suggested more research is needed into whether felines could have hosted the virus."
"The susceptibility of mink and cats to SARS-CoV-2 suggests there may be additional animals, such as those belonging to the feline family, who may act as reservoirs for the virus. But there is not yet enough research to know for sure," he said."
"It is also thought likely the virus could have been transmitted from frozen food, according to Dr Embarek."
"He added the virus could have emerged this way through "convoluted pathways that may have taken a long time and moved it across borders"."
"Scientists also revealed the novel coronavirus could have been circulating in regions outside Wuhan before the first reported cases of the outbreak."
"Unpublished data suggests samples of SARS-CoV-2 were found several weeks before the first reported cases in Wuhan, Professor Liang said."
"However, he added there was no evidence that COVID was spreading in Wuhan before December 2019, when the first cases were reported, after officials looked at research samples, pharmaceutical sales and hospital records."