ANTI-MONARCHY campaigners are to demonstrate at the Commonwealth Day service in London next month — with a new 15ft dinosaur mascot called Chuck the Rex.

Republic’s prehistoric protest puppet is said to symbolise the “antiquated monarchy,” which the group describes as a “relic of a bygone age and a fossil that belongs in the museum.”

The fully mobile Tyrannosaurus rex wears a golden crown and has his own social media page on X — @ChuckTheRex.