an issue has arisen in the England forum which may be similar to one that caused a lot of confusion in the Germany forum last weekend.
Most public transport journey planners assume current local time when queries are made. If you don't notice this they may come up with some odd results and suggest services aren't available (which they may not be a 3AM local time!!). Always look for the option to set a specific departure time.
And it's not just public transport. Google Maps direction planning also assumes current local time unless told otherwise. And then it goes off and checks local traffic conditions - which can be very different at 3AM to what you may encounter on the actual journey. As a result the estimate of driving time may be way out and the public transport journey times could be ridiculous. So click where it says "Leave Now" and change it!