Quote From TreeofLife:
That's quite a normal commute in some areas of the UK. I did it whilst working for about 2 years, and then I got fed up and moved 5 minutes drive away from the office instead.
It's not ideal, but it's manageable, especially earlier on in the PhD when you will probably work shorter hours anyway. And if your PhD isn't lab-based, you will be able to work from home some days.
It's good to hear it is achievable. It's a science phd, which would normally mean in every weekday, but it involves a lot of informatics so perhaps working from home some days might be possible :)