Landing an army in England

What would the Spanish Armada have needed to land an army successfully in England?

Spain needed a landing site close enough to London to keep the supply line manageable and, more importantly, commanders experienced and senior enough to change Philip II's plan when conditions made it unworkable.

Spain could put troops ashore, but the decisive problem was placing and sustaining them close enough to London. Falmouth offered anchorage, yet it also meant existing defenses, an English fleet presence, a long march across difficult terrain, and a baggage train exposed to local attack. The southeast therefore mattered because it shortened the route to the political objective and reduced logistical strain. The deeper weakness was command: the expedition lacked a leader with Santa Cruz's experience and authority to discard Philip II's instructions when weather, communications, or enemy action invalidated the written plan. An amphibious invasion therefore depended on flexible operational control as much as ships and soldiers.