Moving to UK with EU Passport

Hi everyone! I'm carefully considering moving to the UK upon graduating from college in the US.

I'm currently in a difficult situation where I have been living out of status in the US for almost 15 years. My parents came to the US when I was a child on a tourist visa and overstayed. I would easily adjust my status here, but since same-sex marriage isn't allowed at the federal level, I cannot pursue that route.

That leaves me the option to use my Italian/EU passport to move to the UK and begin to look for a job in my field (computer science / software engineering).

If what I have read is correct, I should be able to fly to the UK and go through immigration without a problem right? When I arrive do I just tell them that my purpose is to move there indefinitely?

Thanks in advance for your replies 

Yes, you can move with your Italian passport.   You probably won't be even asked any questions.

Don't expect to be let back into the US once you leave for a long, long time though.

Yes, you can move with your Italian passport.   You probably won't be even asked any questions.

Don't expect to be let back into the US once you leave for a long, long time though.

This.

UKBA probably won't even question you as an EU Citizen you have freedom of movement throughout the EU. Just use the EU line at Immigration.

I use my Italian passport having found out I was eligible for one just 3 years ago and have never had any problems or been asked any questions except once when I was travelling with someone who I was sponsoring (but that was a unique situation I think!)

I don't think they can really ask an EU citizen questions if they are exercising their right to freedom of movement, I have also just used my Italian ID card to travel instead of a passport and that has always been just fine as well. As others have mentioned, your only problem is if you wanted to go back to the States you might not be able to go back very easily, if at all, and might want to look at legal advice for that situation.

Thanks for all your replies! Makes me more confident about making the big move!

Also, how would I go about registering in the UK as my permanent residence? I find it weird how the UK does not have ID cards like here in the States, so how do I prove that I am living in a city in the UK for example?

The only thing I'm worried about is the IT job market in London and a more sub-standard of living than what I'm used to; I guess I won't know what London is really like until I experience it myself.

I understand I will be barred from entering the US for 10 years. My brother who is a US Citizen would be petitioning me as a sibling petition and that takes about 10-12 years, and that's if I decide that I really want to go back.

You don't have to 'register' or anything. You can, but it's not mandatory.

You can find all the information you need on the European Nationals page on the UKBA website.

The only thing I'm worried about is the IT job market in London and a more sub-standard of living than what I'm used to; I guess I won't know what London is really like until I experience it myself.

Depends what you're used to.   There are jobs outside of London, of course.   If you've got the skills why not work as a contract worker for a couple of years until you find a location and/or job that you like?