You actually need way more than £1,000 rent a month more like £1,600 at least. The property you rent in Gibraltar or buy must specifically have CAT 2 qualified status. You cannot rent or buy any random property and apply for CAT 2 status that is forbidden. Health care is cheap in general. So you need a minimum of £40,000 all in plus food, utilities etc. You must also prove your way north︀ of £2m will produce a stable income to support that 40k cost and maintain your︁ self sufficiency otherwise you won't get in.