If I remember correctly, sometime, David Coleman was filling in the time before a big event and he was talking about blood doping. My memory says about 1976 and the Montreal Olympics but I may be out by a couple of years. The account ran that it was accepted that the Finns were going high, taking blood and then re-infusing it in the days before a final. This is my first recollection of encountering blood doping. Coleman and his fellow punter were of the opinion that whilst it was not banned, it was a step too far. They then speculated about how many rivals would follow the lead or already had.
By 1984 we have Chris Commical and the rest being asked to bring family members along to donate blood for use at Los Angeles (strangely quiet on this is Connie Carpenter, although most of the rest of Team USA cycling squad have confessed). We have Alan Wells' great rival, the late Peitro Mennae confessing to blood doping for 1980. We have Wells' own sprint relay team-mate confessing to drug use and identifying that it was systemic in the British sprint team. That made him official leper number one. We have Andy Norman, (Steve Ovett's best man at his wedding and BBC anchorman Jonathan "I don't jump on Sundays" Edwards' agent) with a stack of stories to rival Lance. Amongst these were that he arranged for Met Officers on hand at his events to provide clean urine samples if ever a star was asked to provide one at one of his promotions. We also have the Dubin inquiry identifying that the UK had a program of providing PED advice specialising on athlete safety, but taking the pragmatic view that "athletes dope" so try to make sure they don't take their lives in the process. This was based in four centres in the UK with Dr Jimmy Ledingham at the centre. Was it two years ago or thereabout that it was revealed that West Germany ran a doping program through the 70's and 80's that tried to match that of the GDR?
I know for a certain generation of Brit it will be nearly inconceivable that Cram, Ovett, Edwards, Coe, Daley and the rest doped. The "Yanks were missing - 80" & "the Soviet athletes were missing - 84" story is about as convenient as "2012/13, post Lance and with the intro of the Blood Passport - the peloton was clean" is for Wiggins and Froome. I don't bother discussing this period of T&F with many of my peers, they find it too uncomfortable. However, in life, I find the good guys tend to keep company with the good guys and the bad guys tend to keep company with the bad guys. I don't think anyone is going to say Andy Norman was a good guy.
As for Coe - blood doping wasn't illegal. Do I think he did it - as sure as I could be without proof - I just don't think he would disadvantage himself in his quest for glory.
In my book, blood doping when its use was known by the international Federations and yet they did not ban it, is a grade down from looking at the widespread use of EPO or Aicar when these were not detectable, but banned, and deciding to use them.
For myself, I will go with Mary Peters as clean. I won't write off all Brit success. I think there are places where victory at the top table could be achieved by clean athletes, but it won't be in headline grabbing events.
As for 21 Karat idiots, how about David Hemery. Would any sane person put money on him being clean ? Those strops in Sports Superstar were jaw dropping. John Akki Bua, who beat him at Munich, was feted by Idi Amin and fled Uganda when Amin was toppled and was in a refugee camp in Kenya before Execs at Puma got him freed and he moved to Germany. Does anybody have any money on Akki Bua being clean ? Sadly, there is what we see and what is hidden from us.