What changes can I expect on official retirement age?

We have lived here in France for 10 years. We both receive private (workplace) pensions from the UK and are fully! taxed here in France, where we qualify for CMU complementaire coverage. I will be 65 in a couple of weeks and have already made a UK pension request. I have read about "S1" forms but as we have been covered by CPAM as residents, will I need to get another S1 to prove I'm a pensioner?

Thanks for any info