If I have a booster on Monday, would I be able to travel on Friday? If not, I'm just going to book a PCR.
I had my second jab in the last week of September 2021.
Yeah, last week of September for second dose is ok, as less than 9 months, as here on uk govt website.....
'Proof of vaccination status
France will accept the UK’s proof of COVID-19 recovery and vaccination record at the border. The French Government recognises any vaccination certificates that conform to EU norms. This means your final dose must have been administered at least 7 days prior to travel for Oxford/AstraZeneca, Pfizer/BioNTech, Moderna or 28 days after a second dose of Johnson & Johnson. For details on how to demonstrate your COVID-19 status in domestic settings in France, see the Coronavirus page. Your NHS appointment card from vaccination centres is not designed to be used as proof of vaccination and should not be used to demonstrate your vaccine status.
For travellers aged 18 and over,
France will recognise you as ‘vaccinated’ for entry purposes if you completed your initial vaccine course within the last 9 months. If more than 9 months have elapsed since your initial course, and you have not since received a booster, you will be considered unvaccinated and must follow the rules detailed below.'
https://www.gov.uk/foreign-travel-advice/france/entry-requirements