You’re right a lot of this will be domestic lighting changing.
That said, UK manufacturing decline also correlates with this as that’s very energy intensive. Also don’t rule out fridges, old 90s fridges were very energy intensive compared to today.
> Improved efficiency is also supporting reduced use in the industrial sector – as has a general decline in GB industry and associated intensive electricity use
https://energy.drax.com/intelligence/2024-the-year-electrici...
> This is part of a larger trend. Demand has been falling by 5 TWh per year since 2005. Improving efficiency (lighting, televisions, fridges, etc.), fewer homes using electric heating, and deindustrialisation all play a part