Carte de Séjour When Brexit came into effect, there was insecurity felt by many Brits who had made France their home. Due to the sheer number of people this affected, as well as wanting to make the administrative load as small as possible, the procedure to obtain a Brexit carte de séjour, or WARP card, was hugely simplified. For those installed in France for more than 5 years at the time of Brexit, 10 year residency cards were issued, for anyone in the country less than that,