British citizen of indian origin holding property in india

Me and my wife moved to the United Kingdom around 1970 and are now citizens here holding a British Passport, We have not registered for OCI. Can I hold a property in the name of my wife, my son who was born in the United Kingdom and my daughter, who was born in India but is now a British citizen. Further can I apply for pan card and hold a saving account and earn interest for the same in India without declaration of it in the UK