I emigrated in 2007 and managed 3 years before the homesickness became too much that I drove my OH crazy with mood swings. We moved back to UK in 2010 to the much annoyance of my OH. I enjoyed the first year back as if I hadn't been away, but since then I have missed Oz a lot. All the reasons for leaving the UK in the first place are still here and worse. It is great seeing family and friends but to be honest, everyone is that busy that we only catch up every now and then. Since returning to the UK in 2010 the recession has gone from bad to worse. There will be years of austerity measures to pay off the UK's debt. More worrying, this will impact on my kids futures.
I just wanted to say, when in Oz I thought I was the most homesick person in the world to the point it stressed me out. It wasn't so much for family as they visited quite a lot but it was for friends in the UK and homeland ideals such as lush green countryside and historic buildings and having Europe on doorstep. I believe I made a major mistake coming back to the UK which has been quite disruptive and costly. I have since re-newed our expired visas for another 5 years and hope to be living back in Adelaide next year. It will be another emotional journey that will be hard, but I am sure will be worth it!
Good luck, I know what it feels like!