You can register a business name and open a bank account in that name i.e. sole trader. You need business registration certificate to do this.
With a company, you open a bank account in accordance with the cert of incorporation.
There is a huge difference in just registering the name and registering a company. With a company the name is secure. With a business name, this does not stop someone from incorporating with the same name.
Most accountancy firms offer company setups.
Patrick