Tone,
All visit visa are notoriously tricky. Family visits are a little easier.
Sorry to say but the UKBA would have no conscience about refusing --- not that they will, just saying how it works.
The familiy visit visa is not expensive. Just do it and make sure you prepare a nice letter in support.
Confirm you support all costs etc and think of some emotional reasons in addition to the wedding.
English test is not required.
Make the application Tone. Nothing to lose. We are all here to help with the form and the letter if needed.
