:welcome:
I haven't been through it, but I believe that it's usually pretty straightforward & doesn't usually take that long
I'm not sure about the work issue - we have posters here who say they haven't been given permission to work & others who have - it might be a case of rules changing over time - the rules seem to change like the wind here
the best thing would be to get in touch with the Spanish Embassy in the UK for up to date info. The Spanish are notorious for not answering e-mails so try phoning & if that doesn't work you might be best going to the Embassy itself