Women in France are now being advised not to use "textured" silicone implants while authorities investigate links with a rare form of cancer.
British women are still having the implants put in and there has been no warning from the UK regulator to stop.
It says it will take action when it sees there is a problem.
A Medicines and Healthcare products Regulatory Authority (MHRA) spokesman said: "We know that there are ongoing concerns about the safety of silicone breast implants - we're keeping a very close eye on that."
Manufacturers say the safety of the implants is supported by extensive testing and studies, as well as more than a decade of use in America and Europe.
The BBC's Panorama programme has been investigating implants with the International Consortium of Investigative Journalists and organisations around the world, including the Guardian newspaper and the British Medical Journal.
Janet Trelawny had breast cancer over 20 years ago. Her breasts were removed and replaced with textured implants.
Now, she has been diagnosed with breast implant associated lymphoma (BIA-ALCL).
It is not breast cancer but a type of cancer of the immune system.
In most cases, it is found in the scar tissue and fluid near the implant. But in some, it can spread throughout the body.
She said: "It's frightening to think that something that I'd done because I've had a cancer previously has then caused me to get cancer again.
"I was absolutely mortified. I'm frightened that this can happen and I had no idea."
Janet is waiting for further biopsy results and has been told she will need to have chemotherapy to treat her cancer.
The French have been investigating breast implants since 2011, when they started receiving reports of BIA-ALCL.
The risks of developing it after an implant vary around the world but are thought to be very small.
As of September 2018, the MHRA has received 57 reports of ALCL in patients with breast implants, 45 of which meet specific diagnostic criteria.
That puts the estimated risk of BIA-ALCL at about one per 24,000 implants.
BIA-ALCL appears to have occurred with textured implants made by every manufacturer, according to the British Association of Plastic and Reconstructive Aesthetic Surgeons (BAAPS).
Breast implants come with different fillings and different surfaces - smooth and textured.
In the UK, 99% of breast implants used are textured, according to BAAPS.