Cadbury Eclairs used to be one of my favorite toffees in my childhood.
In-fact it still is, yeah I still like it, love it.
It used to be expensive as compared to other toffees but was worth it so could not buy it as often as I would have liked to, but when I used to get more rupees to spend from my dad, I used to buy Cadbury Eclairs for sure.
It has a thick chewy outer layer which is delicious and inside is filling of yummy eclairs.
It also sticks to your teeth and you have to struggle to get it all cleared from your mouth and that took a long time. In childhood that was fun, meant more taste for a longer period of time.
I dont see it in store very often now. I am not sure if they still make or market it.
Verdict: Try it and bring out the child in you!