Posted: Thu Aug 19, 2021 4:35pm
Post-Brexit, the residency process has become more complicated.
Basically, if you intend to work, you need a working visa (cost approx. £400) and a firm job offer from an employer (and, in some circumstances, the employer will need to show that you have a special skill and a Spanish citizen could not have done the job).
If you were going to be self-employed ('autonomo'), you need an autonomo visa (similar cost) and need to submit a firm business plan and also prove you have sufficient income to support yourself if the business didn't achieve it's targets.
The link below should help you see what is required...
http://www.exteriores.gob.es/Consulados/MANCHESTER/en/InformacionParaExtranjeros/Visados-CGM/Pages/Visados-de-larga-duracion-CGM.aspx