The OP holds an EU passport (Portuguese?) and this is the easiest way to move to the UK.
其實如果你有專業技能去英國做野拿居留易好多 - a Tier 2 (General) work visa holder will still need to live in the UK for 5 years before getting permanent residence and wait a year after that before getting British Citizenship. Getting a Tier 2 (General) visa is not that easy. You will need to find an employer to sponsor you and pay a lot of money to get your Tier 2 visa.
Tier 2 (General) visa cost £892 for jobs in the shortage occupation list and £1174 for those jobs not in the shortage occupation list. The OP can get an EEA (QP) registration certificate by paying £65.
There is also a quota system for sponsorship certificates for Tier 2 visas, for example, the quota for January 2018 will be 1409, while there is no quota system in place just now for EEA citizens coming to live in the UK.
https://www.gov.uk/government/publications/employer-sponsorship-restricted-certificate-allocations/allocations-of-restricted-certificates-of-sponsorship
You need to remember it can take a long time to get your Tier 2 visa while the OP can just buy an air ticket and move to the UK whenever he wants.