Good news: electric cars are ULEZ champions—they literally produce zero emissions (unless you count the smugness). Hybrids? Most are compliant, but check the specific model. Some early hybrids are like that friend who says they’re “helping” but really just moved the laundry from the chair to the bed.
If you drive a Tesla, you can basically wave at the ULEZ cameras and laugh. If you drive a 2012 Prius, you’re probably fine, but don’t get cocky.