Also in other words if I read it correctly ( not sure anyway all my still change ) .. from Brexit on someone from EU won't be legally able to stay in UK for longer than 90 days for a max time of 180 days per year ?
I read that students and business will need visas to come in UK that could cost up to 2000 pounds ( for business/work, for students I think quite less but you'll still have to pay and limited time of staying ) .
If you plan to arrive in the UK from 1 January 2021 onwards, you will need to apply for a student visa if you are studying a course which is longer than six months in length.
You will need to complete an application and have it accepted before you arrive in the UK.
You will need to pay an application fee (£348 for students) and have a current passport or other valid travel document.
Most people will be able to complete their application, including identity verification, using a smartphone app. If you can’t access the smartphone app or you don’t have a biometric passport, you may need to go to a Visa Application Centre in your country.
You will also need to pay a fee called an Immigration Health Surcharge. This gives you access to the UK’s National Health Service. Students receive a 25 per cent discount on the usual cost of this surcharge - so the rate for student visa holders is £470 per year.
Ah yes ..
The job you’re offered will need to be at a required skill level of RQF3 or above (equivalent to A level). You’ll also need to be able to speak English and be paid the relevant salary threshold by your sponsor. This will either be the general salary threshold of £25,600 or the going rate for your job, whichever is higher.
If you earn less than this - but no less than £20,480 - you may still be able to apply by ‘trading’ points on specific characteristics against your salary. For example, if you have a job offer in a shortage occupation or have a PhD relevant to the job.
That's still a lot of money to earn, I can tell you MANY people in Italy, ESPECIALLY in IT, DO NOT get 2.1K eur a month, the general/standard is still around 1.5 .. 1.7K eur a month and that's being quite generous.
For something around 2K you must be in some "commerce/sales" somewhere where you'd still get "a base income" NOT that much higher than "minimal wage" but where you may get some "extras" via some "other bonuses".
The idea ( in Italy ) is to ALWAYS keep everyone as close as possible to minimal wages to avoid higher taxation that BTW is "quite a bit weird" because it works both ways, for the employer and employee so "if you stay minimal" you get minimal but you get taxed little or close to nothing ( if you don't have "any other taxable source of income" ) BUT as soon as you go above certain thresholds taxes are hammering real hard so it's "lot more work for disminished return".
If you really are "lot more rich" then it means "you have other means to avoid taxes"

But it's "the spot in the middle" that gets all the shit.
But seriously "on papers" is nothing but common to see "almost everyone close to minimal wage" and "minimal wage" is not even 1.5K is less .. 25K eur a year is quite a high salary.