
On February 9th, 1784 James Sadler launched an unmanned Hot Air Balloon, from what is now St Hilda’s College. The Balloon travelled all the way to Kent, 79 miles away. James Sadler was the son of a cook, but worked at the Ashmolean Museum, in Oxford. The launch place is an area of green which is bounded to the North by Merton College. To the South by the Meadows. To the West by Christ Church, and to the East the Oxford Botanical Garden, the first in Britain. Also a lovely place.
Later the same year, he hazarded his own life for the first Hot-air Balloon ascent by an Englishman. On the morning of October 4th, he lit the stove in the Balloon basket to create the hot air. He rose an estimated 3600 ft. On board he had a barometer and a thermometer. He used the Barometer to estimate height. The thermometer was not very useful because of the heat of the stove.
He reported that his elevated position caused no inconvenience, except that it was colder than on the ground. A wind drove him towards a wood as he put out the stove. He had ‘recourse to the Oars’ which he exercised with great Success’. I think the oars were used to poke the air out of the balloon to help his descent. He landed safely 6 miles away in Woodeaton.
Further Flights by Sadler
On the 17th November he ascended in a Hydrogen Balloon, which was also successful. He made further ascents, including one at Mermaid Theatre in Hackney. He survived into his 70s and died in 1828. Sadly, one of his sons died in a ballooning accident in 1824.
Note on the Hackney Balloon Ascent
I found no reference to the Mermaid Theatre in Hackney. But there was a Mermaid Tavern in Mare Street, originally just north of St Augustine’s Church. It was then rebuilt on the other side of the road in the 1740s. And this is where the Hackney flight ascended from.

Flights but not by the English!
When it comes to ‘firsts’, there is a lot of jiggery-pokery as to who really has the precedence. The actual first balloon ascent was on November 21st, 1783 by de Rozier and d’Arlandes. Their hot-air balloon was designed by the Montgolfier Brothers.
The first ascent in England was Vincent Lunardi. His flight was a couple of weeks before Sadler’s on September 15th. But then he was from Tuscany. It took off from the Honourable Artillery Company grounds at Moorfields in London.
So Sadler wasn’t the first, but was the first Englishman to ascend in a hot-air balloon. But my antennae is twitched by the use of the term ‘Englishman’. Because, since 1707, and the Act of Union, England was now in the Kingdom: ‘The United Kingdom of Great Britain’. Something was wrong. So yes, I discovered that the British (and Scottish) first ascent was by James Tytler. This took place from Edinburgh on August 25th 1784. To see more on Tytler who was an Apothecary and the editor of the Second Edition of the Encyclopedia Brittania go here:
To read about Zeppelin attacks on Britain see my post here.
First published in October 2025


















