lord siddle, that's very helpful. could i— those. lord siddle, that's very helpful.at's very helpful. could i ask you to go | those. lord siddle, that's very| helpful. could i ask you to go a little bit slower, please. our stenographer who was working remotely could find it difficult to keep up with that speed. the cabinet secretary is head of the cabinet secretariat, by virtue of his or her role is right at the top, at the apex of the civil service? correct. is the apex of the civil service? correct. is the role _ apex of the civil service? correct. is the role of— apex of the civil service? correct. is the role of the _ apex of the civil service? correct. is the role of the cabinet - apex of the civil service? correct. | is the role of the cabinet secretary one that is set down in writing, is it constitutionally defined? or is the role of the cabinet secretary, whoever he or she may be, rather more an organic one, something that changes over time according to the prime minister of the day might be? it is written down in the cabinet manual which is essentially a cod