Such considerations are not futile in all desert regions. Modern technologies (keyword: solar power in combination with large-scale sun shading equipment) would, in principle, be possible to implement now. With minimal capital, the maximum return could be made. Such investments would be sustainable, particularly when you consider the various side benefits such as reforestation, revegetation, increased diversity and, last but not least, additional habitats.
The question of local vs. overseas production is also key. Consumers often lack awareness of the seasonality of local vs. imported produce, preventing them from making informed sustainable choices. Furthermore, a significant amount of the detrimental social and environmental consequences of the UK’s food production are produced abroad. Therefore, a transition to plant-based foods could also reduce the UK’s global environmental impacts.