The cake is a chocolate-covered swiss roll and decorated with red, blue and white sprinkles to celebrate the Queen’s 70 years on the throne.
A spokesman said: "Clarence has a sweet edible face and boots with a Union Jack crown to top it all off. Morrisons' Clarence the Corgi cake will join Morris the Caterpillar on shelves in stores nationwide on the 21st May, ahead of the thousands of street parties planned across the country to celebrate the Platinum Jubilee.
The cake serves 12 people and costs £6.
Rachel Fish, Cake Creator at Morrisons, said: “We’ve created this special cake to pay tribute to the Queen, as the country celebrates her Platinum Jubilee this summer. We had great fun coming up with names for the cake but think Clarence, as chosen by our customers, is a fitting tribute.”
Morrisons previously created a replica of Harry and Meghan’s Royal wedding cake in 2018 and a gingerbread prince to celebrate Harry’s first Father’s Day, which both proved popular with customers.