I need to move a 1976 Bedford TK fire engine through the LEZ but it has only just dawned on me that this one is actually a petrol engine. Maybe a dumb question but I’m guessing it’s exempt as I thought the charges only relate to diesel engined commercials?? Have I genuinely missed something here or am I just in a state of shock that I might be £200 better off?? 
go online to the lez site and you will find a phone number there to ring them up, but from what I can see as its not diesel I don’t think it comes under the lez 