Thanks for posting the British Miler Club article on Moorcroft. Very interesting. I haven't read it thoroughly or put down those sample schedule in such way I can see them easily. Unfortunately sample scheduls only show a part of training weeks and it is very difficult to fully understand what they are doing without knowing the over-all picture. So Moorcroft trains 80+ miles a week on the race week but it is too much? If he trains (I don't know), say, 120 miles, probably 80 is not too bad. He seems to do fair amount of repetitions but does he do them year-round. Once again, Lydiard training has lots of repetitions and fast training toward the end of the cycle. If you only saw the last month or 7 weeks before the competitions begin, most people will not believe it because it's so different from well-known 100-mile-week training. Speed, in terms of "seconds", is the same thing; it seems awefully fast to me, but then again, any of his runs would be well into anaerobic range for me! But if you saw him doing 30X200m two days before competition, 1) it's a sample when he was younger and/or 2) I think it's a typo. I'll bet it's supposed to be 3X200; comparing with the rest of his program and other samples schedules.
I have NO idea what type of training Mottram does so I won't comment. Or I don't even know if they really train "hard" before competition in comparison to their level of fitness, what I could speak for is what Lydiard had meant about "you can't train hard and race hard at the same time." Again, don't forget the line, "at the same time". It is Lydiard's belief that you need to be FRESH and SHARP when you're competing. I wrote it somewhere (it could have been at run-insight thread) that tired muscles are tight muscles and they don't perform well. Or simply put, if you're tired, you can perform well (yeah, thank you!). Once racing starts, and as HRE explained, Lydiard's runners competed quite a bit contrary to popular belief once they start competing, they kept their training short and fast with plenty of rest and, if doing aerobic runs, it may be fairly long but at much easier ace. All the focus should be geared toward keeping your body and mind well-rested and be sharp while making sure to maintain your aerobic capacity (by jogging a lot). They might do something like 3~6X200 very fast but with plenty of recovery in between. They might still run 22-mile Waitak but at much easier pace.
In regards to typical American high school scene, they tend to do lots of traditional 400s, which is just fine; but the problem, as far as Lydiard was concerned, they do those WHILE they are racing a couple of times a week. In Lydiard's program, those types of training is already behind them once racing starts. Especially for young developing athletes, combination of tough anaerobic training and continuous racing can be, as Lydiard would say, "deadly". They could perform for a coule of years; but then what would happen? Well, we see it every year with young high school kids. They get their potential "squeezed out" and do well while in high school; but rarely continue to improve or produce good form after they leave high school.