i was about to say i dont think you can get them any more..... but a quick google andWell you couldn't really just call them chocolate bars...
Aaagh, I fell into the trap.

Topic Chocolate Bar Ood | eBay UK
Indulge your sweet tooth with the Mars Topic Chocolate Bar, a delightful treat that combines the richness of chocolate with a crunchy Ood filling. It's a pantry essential, sitting alongside other beloved confections, waiting to be savoured.
www.ebay.co.uk
its a little out of date mind you