Don’t forget to factor in time getting from the car park to crew room/security. Depending on the setup, it can easily add another 20/30 minutes to your commute. I lived 35/40 mins from STN and LTN and found that a very doable commute for 12 years, all day trips and some long days too. I’m now 45 mins from LHR in no traffic. Some days it’s taken me 1hr 15/30 if the M25 is clucked! I wouldn’t want to live much further personally. Not long term anyway…