The UK Border Agency (UKBA) is responsible for administrating all Visas and Immigration to the UK in association with the Home Office. They are also responsible for processing applications for British Citizenship.
To find out whether you are eligible to apply for UK Citizenship or if you have, or are currently experiencing a delay or complications in your application you should write to the UKBA at the following address: firstname.lastname@example.org or call: 0845 010 5200
To register and apply for British citizenship online click HERE
There are several ways to visit the UK. The type of Visa you require will reflect the nature and length of your visit.
For information on the appropriate visa for you, click HERE
Once you have all the information you need, you can apply online HERE
Rights for EU citizens in the UK
I have long argued that EU citizens here and UK citizens abroad should be welcomed and retain their established rights. Here I will set out details over the steps EU citizens will and will not have to take concerning their residency.
Below is the initial advice from the Government for EU citizens. I will be up dating this page as new information becomes available:
Status of EU citizens in the UK: what you need to know (Last updated 16/02/18)
Safeguarding the position of EU citizens in the UK and UK nationals in the EU (Last updated 27/06/17)
* This help guide is by no means definitive, nor should it be relied upon as legal advice *