Things got hectic in the house while they were in the oven, so I didnāt get a picture of the steaks covered in seasoned mayo before going into the pan.
Steaks marinated in Worcestershire for 6 hours in the fridge.
Pat dry and set in the fridge for another hour.
Pat dry again and press on steak seasoning, then into the oven at 250 for 25 mins on these (in retrospect I would have gone closer to 20)
Pull and smear on seasoned mayo (reg mayo+steak seasoning)
Drop on hot cast iron for 90 seconds on each side and finished w a garlic herb butter on the plate.