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Top civil servant could head to Washington and leave role as cabinet secretary
But Mark Sedwill says private sector still has a lot of preparation to complete
Top civil servant’s dual roles bolster his authority while he also has PM’s trust
PM implicates Gavin Williamson in 5G disclosure but former ally denies responsibility
Hammond the latest to deny responsibility as phones and email come under scrutiny
Sedwill predicts 10% hike in food costs, recession and plunging currency
Cabinet secretary’s letter ranges from food prices, ‘companies on the brink’ to Britain’s security
Cabinet secretary and national security adviser jobs fused to make a ‘success’ of Brexit
Combination with national security post seen as unsustainable
Illness prompts Jeremy Heywood to step down as cabinet secretary
Mark Sedwill’s move fuels speculation he may in time succeed Jeremy Heywood
MPs told security procedures for Russian dissidents in UK being reviewed
Dossier reveals Moscow’s interest in the Skripals dates back at least five years
Top civil servant admits four ‘efficiency programmes’ in 8 years are causing trouble
Military review a ‘fiscally neutral exercise’, says national security adviser
Budget for £178bn new equipment programme under pressure, report warns
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