Thanks for the welcome. much appreciated. As to advice, apologies for being non-specific. I'm not looking for legal or immigration advice. Luckily, as Cyprus is an EU country I can live here for ever. My girlfriend has another 2 years on her visa, so if we get married here during that time she gets residency as the spouse of an EU citizen. A 5 year visa at first, then a permanent one if the marriage is still existing. Nice and simple(ish).
The advice I am looking for is regarding what pitfalls I might encounter regarding us being from different cultures, and how to avoid or overcome them. She is not a stranger to Europe, being in Cyprus for 2 years, but is a stranger to the British.