Bringing girlfriend to uk from Philippines

Hiya expats, can anyone advise me please. I'm coming to the Philippines in July to meet my girlfriend for the first time, I'm planning on reapplying for a visa extension and fly back to England in September for my daughter's graduation. And would like my girlfriend to come back with me for a week to 10 days, and then return back to the Philippines to settle down together and hopefully marry.
What I need to know is
Would it be possible for my girlfriend to come with me and what do i need to do to make this happen.
Many thanks

You need a miracle my friend..The uk immigration are VERY strict in letting her in.you need many paperwork and photos ect. I was turned down 3 times to get my wife and kids to uk.10 years together .