Thanks for that Vee I really enjoyed that!
Its nice to know that I have been doing my seed sowing over the years the RHS way.
I did notice a couple of variation on how they do it and how I do it, but thats gardening!! it wouldn't do if we all did things the same ;)
1) I don't tamp my compost down with a tamper after filling the tray/pot I just tap the tray a couple of times on the bench and I find this gives all the compaction I need.
2) I don't grow runner beans in cell trays due to past experience. ( I use 3"pots)
To explain why; they are very fast growers after they germinate as most of you will know and if grown in cell trays they want potting up within 24 hours of germinating or they become cell bound.
The tap root tends to grow through the drainge hole and is often broken off when potting up.
This is not necessarily a disaster but I think it checks the growth.
The reason for me changing was; it was not always practicle for me in my working days to do this task at such short notice, I had to leave them until the weekend when I had the time. Meaning I often had lots of cell bound beans :-\
The gardener demonstrating I would guess is full time and could therefore keep on top of this.
This is my way;
http://tinyurl.com/yy5xkln.b. As I intimated above; These are just my observations and in no way do I want to detract from an excellent presentation.