Khafi KareemImage copyrightPA MEDIA
Image captionScotland Yard said it had not granted Ms Kareem's request to appear on the programme

A police officer is appearing on the Nigerian version of Big Brother despite bosses refusing her permission.
The Metropolitan Police said it was carrying out an internal investigation after PC Khafi Kareem went on the programme "without authority".
Scotland Yard said the 29-year-old had been granted unpaid leave for an "unrelated reason".
A spokesperson for Ms Kareem said she would "comment on the matter when she can".
Television channel Africa Magic said Ms Kareem joined Big Brother Naija to "do societal good".
A profile of Ms Kareem on its website reveals she would spend the prize money, reportedly worth 30 million naira (£68,000), on hosting a travel show in Nigeria, as well as investing in charitable causes.
On the show, Ms Kareem and seven other contestants are currently nominated for eviction.
Her social media pages have been promoting posts encouraging viewers to "save her".
The off-duty officer has also posted a statement requesting that the UK's Sun newspaper withdraw an article that alleges she faces the sack for having sex with another contestant on the show.
She said the paper had not contacted her for her side of the story and the article, which she described as a "defamatory outburst", was damaging to her image.
"Khafi's side of the story is deliberately and conveniently omitted… this comes from a repressive culture of shaming and characterising women for their sexual decisions and life choices," a statement on her Twitter feed reads.