Cherry Ripes are made by Cadbury's in the UK but not generally sold and distributed here. They are sold in Australia but some specialist shops like Cybercandy sell them (at an inflated price of course).
They are quite thin and flat, have a darkish chocolate coating with a deep red coconut filling and containing cherries.
The bar you remember could have been a Cherry Ripe but if you ate it regularly it is more likely to have been a Raspberry Ruffle.
Cadbury Cabana had a milk chocolate coating with a caramel layer and a deep coconut layer containing cherries. The filling was white though and the bar, although having a flat base, was dome-shaped to accomodate the abundant filling.