"Member States may exclude the individual concerned from their territory pending the redress procedure, but they may not prevent the individual from submitting his/her defence in person except when his/her appearance may cause serious troubles to public policy or public security or when the appeal or judicial review concerns a denial of entry to the territory." 18. However, this provision has to be seen in context. It is succinctly explained in the reasoning of the Upper Tribunal at paragraph 28: "