Victoria Station and Victoria Coach Station are close enough that you could shout wedding vows from one entrance to the other. They are neighbors who share a fence made of bus lanes and discarded coffee cups.
So don’t stress. You have time. In fact, you probably have enough time to buy a £5 croissant from the Pret, walk the 500 meters, and still have ninety seconds to spare before your coach leaves you behind. And if you don’t? Well, there’s always another coach tomorrow. They run like clockwork—if that clockwork was built by a hungover hamster.
Now go forth. Walk the sacred 500 meters. And for the love of all that is holy, don’t get in a taxi.