^^ themas, I get my £159 a week state pension and £76 a week pension credit on top of that, plus around £30 a week private pension, you can get state pension, private pension and pension credit all at once as I do. Things will change when my wife gets her state pension in another 5 years but until then I know how much income we have every month.
You can also opt to have your pension credit/state pension paid weekly or 4 weekly to suit you. The pension forecast / help line will offer you the choice weekly or 4 weekly payment.