My 3yr old has had a temp all day that i've been unable to bring lower than 38.8(calpol and ponstan given). hes not eating but has taken sips of water and drinking yoghurt. should i take him to casualty?

Fever just symptom: Fever is just a symptom - it's not something you treat. You need to know the underlying cause of the fever - where is the infection or what is disease causing the fever. The child likely has a viral infection. Give it a couple of days , and if fever persists after that, then take child to doctor. Don't worry so much about fever - it helps fight infections. Push fluids, no worry about solids now.