If you're moving to the UK you will need a bank account if you're looking for a convenient place to put your income. It'll also allow you to make payments for things like your accommodation and other bills.
To open an account, you'll need to provide documents to prove your identity. By law, banks need to verify you are who you say you are, to prevent money laundering. Even if you're opening a basic bank account, you'll need some proof of address and identity for the bank. This could be in the form of a utility bill, a driving-licence or an official letter, for example. You would need to check which documents are acceptable with your provider when you make your application.
To avoid transaction and overseas ATM charges, it'll probably work out cheaper to open a bank account in the UK if you're living here. If you're coming to the UK (or living in the UK) you could find a basic bank account more suitable. If you struggle to open a standard bank account due to bad credit, the basic bank account alternative here http://www.thinkmoney.co.uk/basic-bank-accounts/ could help. To apply, you simply need to be able to prove you're going to be a UK resident for at least six months of the year and you are over 18 years of age.
If you're new to the UK, you probably won't have a credit history here yet. Some bank account providers will 'credit check' you before you can open an account and would like to see some sort of credit history. However, opening a basic bank account is different. You could apply for one without having to pass a credit check and/or without any credit history in this country. It might be the right option for you if you need an account, but don't have a credit history in the UK yet.
Basic bank accounts allow you to receive income, pay bills by Direct Debit (and potentially by standing order), and transfer money between accounts. There is also no overdraft facility - which is one reason why these accounts are easier to open. Some basic bank accounts offer online banking and/or a debit card - although not all of them do.
British banks have to be cautious when they allow anyone to open an account because of strict anti-money-laundering laws and regulations in the UK.Even if you're opening a basic bank account, you'll need some proof of address and identity for the bank. This could be in the form of a utility bill, a driving-licence or an official letter, for example. You would need to check which documents are acceptable with your provider when you make your application.