Science set for 6yo

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I'm after a science set for my 6yo DS. Can anyone recommend one that they think is brilliant for that kind of age?

www.amazon.co.uk/John-Adams-Hot-Wires-Electronics/dp/B0006SK3WG.
This set is brilliant! have a read of the reviews.

This looks fantastic Enchanted, thanks! My only concern is that it's a bit pricey (it's for my parents to get him and they also have 7 other grandchildren to buy for!!).

Anything else for around the £25/£30 at a push mark?

We have this type www.amazon.co.uk/gp/aw/d/B001MJ7DB2?pc_redir=1414521385&robot_redir=1. They do various size sets. DS has played with it since he was 4 and it has proved quite robust. He is quite adept at following the diagrams now, and is learning quite a lot about electrics.

We have the Cambridge brainbox sets too. They are well used here, the starter sets can be found for less than £20 if you shop around.

Dd also has an usborne book of science experiment s using things from around the house which she's enjoyed.