Custom Dairy/Gluten Free T-Rex Cake. This bold dinosaur birthday cake makes a T-rex-ellent birthday party treat. Just personalise with any birthday message. Our childrens birthday cakes are a brilliant centrepiece for your kids birthday party, all their friends will be jealous with this fabulous childrens birthday cake. For all those dinosaur themed birthday parties with free next day delivery or advance delivery Treat someone special to something spectacular with the Personalised T-Rex Cake.