How early should I arrive for a train in London?

Ugh, figuring out train times in London is such a headache, isn't it? I've seen recommendations from like, NINETY minutes?! Seriously? Who has that kind of time? But then, 30 minutes? That just feels… risky. Especially during rush hour. Remember that time we almost missed our train to Brighton? Packed platform, everyone shoving, and we were sprinting with our bags practically flying behind us. Never again! So, for me, the sweet spot is about an hour. It's a nice cushion, you know? Enough time to deal with any tube delays (because let's be real, those happen ALL the time!), grab a quick coffee and a pastry – because train station coffee is weirdly a must-have for me – and, most importantly, just chill for a bit before the journey. No heart palpitations, no last-minute panic. It just makes the whole experience so much smoother. I’ve heard some people say they can cut it closer, maybe 45 minutes, but honestly? An hour is my peace of mind time. Worth it.