You rotter, Alf, I can't resist a challenge.
The first one (on the left) is a New Pattern centre bit which is used for boring shallow holes. It can pull itself into the wood with its threaded nose. The one on the right is a brad point centre bit (sometimes called Old Pattern for obvious reasons). It has to be pushed into the wood but has the advantage of greater control. It's good for boring into thin wood because its point won't split the wood. When the tip shows through on the other side, you withdraw it and complete the boring from the other side.
The other bits are all countersinks but I'll need another look at them. Will post again in a minute.
The first one (on the left) is a New Pattern centre bit which is used for boring shallow holes. It can pull itself into the wood with its threaded nose. The one on the right is a brad point centre bit (sometimes called Old Pattern for obvious reasons). It has to be pushed into the wood but has the advantage of greater control. It's good for boring into thin wood because its point won't split the wood. When the tip shows through on the other side, you withdraw it and complete the boring from the other side.
The other bits are all countersinks but I'll need another look at them. Will post again in a minute.