I was intrigued by your comments on running E10 in your MGB, as early B's had soft valve seating so were leaded fuel but as yours is a post 76 MGB the engine could run on unleaded fuel suggesting E5 97+ but obviously you don't get pinking as expected using E10.....learn something new every day
Yes, she runs really well - as she's an old girl I do a check/tune of carbs and timing every six months, but I've done over 30K miles in just under three years and no issues (and saved around 1500 quid vs E5)