It kind of depends on where you live/drive. Mostly down South in cities, you’d be around £35. I don’t drive in towns much at all, so my average over the last 24,000 miles is 3.3 miles per kw, I’d be £50 on 30p a unit standard tariff.
However, I am just about to switch to the Intelligent Octopus tariff, once switched, I’ll be 29.4p for my peak electric and 7.5p for a minimum of 6 hours of off peak and all my EV charging. Then the cost for 550 miles will fall to £12.50.
In life, it's not who you know that's important, it's how your wife found out.