Covid testing in 61

Hi
Please does anyone know how I can make a short-notice or walk-in appointment to have an antigen test in 61 or thereabouts? I have to travel to England on Tuesday evening and the test needs to be within 48hrs of departure.
Thanks
F

Just go on the sante.fr website (depistage covid), put your dept in and it will come up with a list of places

Most pharmacies apparently doing, results on the spot in 20-30min, though likely most prefer you to enquire about a specific time to come, a bit ahead rather than walk in