Yes, that's a mandatory requirement of UKBA.
As a very first step please read this thread and follow all the included links to the UKBA site.
All New Guide - How to apply for a Spouse/Partner Visa
Read this and again follow the links - Applying for a UK visa in the Philippines
The UKBA advises all applicants to read their application Guidance Notes together with their Supporting Documents Guidance
Take this journey step-by-step, don't be shy to ask as many questions as you want.
There's plenty of folks here who have been down the same road and made that journey. Everyone here is friendly and willing to share experiences, and to make sure to get that special visa.
Some early steps for you both to consider is for you meet the English language requirement
Also there is a requirement for TB Screening before an application can be submitted.
Here's the needed detail - Tuberculosis testing in the Philippines