Toyota Avensis feels like it will roll on roundabouts

It’s a 2006 Toyota Avensis and I’ve had it for 5 years. It had its service a couple of weeks ago and since then it’s started feeling like it’s about to roll on roundabouts. I’m not going slowly but I’m also not going particularly fast. Any ideas?

The one thing I know it doesn’t get when it is serviced is wheel alignment. Could that be the cause?