I was sat on row d kop end of the south stand. they were wendy's fans on the open part of the kop. and we at it for most of the match. the west part of john street was given to them could never understand why they did that. maybe a police request or summat. Bramall lane stand held 15,000.3,000 seated and the rest standing. I would estimate 3k scum on that part. of John street stand. I would estimate 20,000 wendy fans in the ground in total.
That leaves 25,000 Blades. however, backhanders to turnstile operators. we know it went on.so I think more than 45,000 in the ground.in my humble opinion anyway.