Complex sentence: Having to work under strict cost limitations imposed by the Ministry of Defence, the first prototype was completed on time and within budget on 23 January 1969, after extensive hot and cold weather trials in Norway, Australia, Canada and Abu Dhabi.
Split into simpler sentences: Having to work under strict cost limitations imposed by the Ministry of Defence, the first prototype was completed on time and within budget on 23 January 1969. After extensive hot and cold weather trials in Norway, Australia, Canada and Abu Dhabi.