Since i'm just cruising through and don't know shit about this type of thing, I'll add the following based on my own specialty (writing, english language):
"enquire" is an acceptable spelling variant of "inquire", but it would likely look more professional and not risk confusing people to spell it the common way, inquire.
Just a thought- it looks great, btw!
EDIT: Re-read your page's content- you have a few major punctuation errors (periods instead of question marks). Also, the wording is messed up in a few sentences, like you wrote it and then edited a portion without changing it to account for difference in tense, or words seem to be left out. If you can, run the text through a grammar checker.
If none of this matters to you, then nevermind.
Just being helpful.