The approved TB test centre for UKVI is:

International Organisation for Migration Health Centre
15th Floor, Units A and B Trafalgar Plaza
105 H.V. dela Costa Street
Salcedo Village
Makati City 1227
Metro Manila
Tel: (632) 883-9339 or (632) 511-8771
Mob: (917) 593-4688 (globe operator) or (919) 993-4667 (smart operator)
Fax: (632) 883-9377

email: mhc.uk@iom.int

Fee 3200 PHP

I believe the certificate if issued has a six month validity so will still need to be valid at the time of the visa application.

https://www.gov.uk/government/public...he-philippines