Joe,
Many thanks for your help.
I do have a lot of evidence supporting our relationship including copies of bank transfers over the last 8 years. The trouble is we did not know we would have to supply this sort of thing when we started our relationship 10 years ago! So some things such as a lease agreement may have gone missing (my partner is currently searching for this). I have my old passports which show dates in/out of the Philippines, photos, a video of our family life, daughter's birth cert in my name plus numerous other things. Just hope it will be good enough.
Cheers
Geordie