All applications from 28 October must include both life in uk pass certificate and a pass certificate in English at level B1

I'll post all details and links when I get back to my computer.
You would be well advised to review the application form and the guidance so that you understand what's required.
That 3 year timing is critical. Don't risk non compliance (even one day) UKBA are very strict about that as it's law. They may take a dim view if they feel you tried to circumvent immigration rules.