If a person is found guilty or is sentenced at the Magistrates Court, they have an automatic right to appeal to the Crown Court against their conviction or sentence, and must do so within 21 days. They must be aware however that the Crown Court could increase the sentence as well as decrease it, and also consider ordering the person to pay costs towards their appeal.
If a person is found guilty or is sentenced at the Crown Court, then they would have 28 days within which time the necessary appeal forms and notices must be sent to the Court. There is no automatic right of appeal. A defendant (normally through his legal representatives) will have to explain in writing to the Court of Appeal why they feel the conviction or sentence must be appealed (known as grounds to appeal). The Court will then consider whether they will allow an appeal hearing