EU citizens can immediately obtain this with the EHIC (European Health Insurance Card), but at the end of the transition period, Britons won’t be able to do this unless a reciprocal agreement is made with Spain. Pensioners who live in Spain can access healthcare with the S1 form, but if you are not of pension age and seek to move to Spain, you will need to take out private healthcare until you are officially a resident and can take advantage of options such as the universal health system in Spain. If you have moved to Spain and work, you will pay into the system and receive free health care.