Very popular range from Royal Doulton which was in production for more than 30 years. Interestingly these cereal bowls are in exceptionally short supply. Whether this is because bowls are used a great deal and suffer damage or because there was too little production is unclear but the only example I have found offered on the internet is priced in excess of £100. I'm starting the bidding for the four at £40.

Diameter is about a tenth of an inch under 7.