Found this one easily enough https:/…
(clicked on their page and it opened a scareware window. Great advert huh!)
There are probably others.
There is also a bus on weekdays from Portimão to Cape St Vincent via Lagos and Sagres especially for visitors. Leaves Portimão Avenida Guanaré at 0955, returning at 1505. NB does not run at weekends nor public holidays.
Great Cubsur thank you