Yes, but what matters most is that you don’t commit more than you can comfortably afford.
How much you decide to pay each month will make a difference to your credit history. Future lenders will look at how well you’ve managed credit as part of their assessment of your creditworthiness, and showing you can manage £20 a month is very different from showing you can manage £200 a month.
But remember, anything you pay will make a positive difference. The most important thing is that you don’t overstretch yourself, as a missed payment will damage your credit history. Be sure to choose a monthly amount you can easily manage — even in the event of a financial emergency.