Take a look at the link below John; https://en.wikipedia.org/wiki/Visa_requirements_for_Filipino_citizens Visa required
Thanks so if I am reading it right because my wife has a current visa for the UK she doesn't need a separate visa@
From here: http://www.visitgibraltar.gi/get-there-visa As a general rule, those who require a visa for entry to the UK also require a separate visa for entry to Gibraltar. Applications should be made to any British Diplomatic Visa Issuing post in the applicant’s normal country of residence (British Embassy) or in the UK, the visa section of the UK Passport Office in London (by appointment only). Counter 40 The London Passport Office Globe House 89 Eccleston Square London SW1V 1PN Opening hours: 10.30 - 15.00 Monday to Friday Visa Issuing Department: 020 7901 7542