These are the don't buys (again labelled as SPF 15)
Malibu High Protection Lotion
Our SPF rating: 6.9
Malibu says it has re-tested the lotion and found it exceeded SPF15.
Boots Soltan Sun Lotion
Our SPF rating: 8.7
Boots says it has re-tested the lotion and found it exceeded SPF15.
Wilkinsons Wilko Sun Protection System
Our SPF rating: 6.3
Wilkinsons says it will retest the lotion and expects it to pass.
One sun screen that also failed our test
Asda SUN SYSTEM Lotion
Our SPF rating: 11.5
Asda says the lotion has been reformulated, but exceeded SPF 15 in its own tests.
What about Tesco?
The store's own tests on their sun screens confirm our findings.
We originally included Tesco's Sun Protection Lotion in our tests. The sun screen wasn't in the shops when we started testing, so Tesco sent us a bottle. We found it had an SPF of just 9.2.
But when we alerted the company to our findings, it said it hadn't tested the sun screen itself before sending it to us. When Tesco did test the sun screen, it too found the SPF was nine.
Tesco says it has been selling the formulation we tested as SPF8.
The makers of the other Don't Buy sun screens have refuted our findings but we're pleased that Tesco took action when its product failed its tests.
tortoise, they only tested factor 15 - your factor 30 may be as labelled. It is annoying, I agree.