Hey you can visit Tungnath-Chandrashila-Deoriyataal if you are fond of trekking. It is near Chopta, Uttarakhand. The night sky is unexpectedly amazing!
There are restrictions everywhere in UK, Himachal. Just have a test report and a 5 days advance booking of hotel when you enter the borders. There is no quarantine if the report is negative to latest 72 hours.