Contrary to a common misconception, there are indeed oceans separating England and Australia. England lies in the Northern Hemisphere, while Australia is in the Southern Hemisphere. The journey between them crosses multiple oceanic zones.
A vessel sailing from England to Australia typically traverses the Atlantic Ocean, passes through the Mediterranean Sea and Suez Canal (or around the Cape of Good Hope), enters the Indian Ocean, and finally reaches Australian waters. Alternatively, a Pacific route goes via the Panama Canal across the Pacific Ocean.
Thus, the distance is spanned by a series of interconnected oceans and seas, not a single body of water, and certainly not "none."