when my thai ex got her fiance visa a few years ago the TB xray was a compulsory part of the visa process
but as i understand it its not for filipinos unless that has changed in the very recent past
if you go to the UK immigration website it states which countries you will need TB screening from
the Philippines is not one of them
(thailand cambodia and Laos are however )
here is the excert
Applicants for UK visas valid for longer than six months in certain countries now require a certificate to show that they are free from infectious pulmonary tuberculosis (TB).
The Government has implemented a programme to screen people applying to enter the UK for more than six months for tuberculosis. The initiative is part of the Government's Five Year Strategy for Asylum and Immigration. Testing has begun in the following countries:
Bangladesh,
Ghana (which also takes applications from Burkina Faso, Cote d'Ivoire, Togo and Niger ),
Kenya (which also take applications from residents of Eritrea, Somalia, Democratic Republic of the Congo, Rwanda, Uganda (visitor applications) and Tanzania),
Pakistan,
Sudan, and
Thailand (which also takes applications from Cambodia and Laos).