Next day post from France to UK

[Fastpost]

We need to send some original copies of signed documents to our solicitor in the UK and they need to be there ASAP.

Does France have the equivalent of "next day tracked delivery"? Our nearest post offices are both closed tomorrow.

DHL or equivalent would be my go to for that sort of job. Expect to pay for the privilege.
Take copies before you post!

Before the strikes, but we had passports couriered to the UK, processed and back in our hands 6 days (days, not working days) later.

Good to hear.

Realise that it isn't going to be cheap.

Try the parcel compare site