ECDC stats are out for today. It's already been mentioned in the press, but at 32.2 and 30.2 cases per 100,000 over the last 14 days respectively, Croatia and Czechia are on the 'at risk' list for quarantine of people arriving in the UK
Denmark is also at risk with 31.5 cases, but Denmark is already fairly strict about people arriving from the UK, so traffic between the UK and Denmark is already constrained