Eco-friendly insulation ideas: Should Tintfit window films be part of a sustainable UK energy plan?

I’m trying to make my home more energy-efficient and eco-friendly. Do you think these window films are actually worth including as part of a greener approach, or are they just minor tweaks?

I’ve been using them for a while, and yes, they are a small but meaningful part of a sustainable setup. On https://www.tintfit.com/shop/energy-saving-insulation
here I found some eco-friendly film options that really help reduce energy usage without creating waste. In combination with other small improvements like draft proofing and LED lighting, the films have helped me lower energy consumption and feel better about my environmental footprint.