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Written question asked by Ben Spencer (Conservative) on Friday, 9 October 2026, in the House of Commons. It was due for an answer on Tuesday, 13 October 2026. It was answered by Emma Reynolds (Labour) on Monday, 19 October 2026 on behalf of the Treasury.


Government Departments: Quantum Technology

Question

To ask the Chancellor of the Exchequer, whether HM Treasury has received a costed plan for migration of government systems to post-quantum cryptography; and whether provision has been made for it in departmental settlements to 2029-30.

Answer

Planning for the migration to post-quantum cryptography is expected to be completed by 2027, highest-priority systems migrated by 2031, and all remaining systems transitioned by 2035. Departments will be advised to consider this in spending review planning.


Secondary information

Type
Written question
Reference
30472
Session
2026-27
Subjects
Government departments Quantum technology
Link
View this Written question on www.parliament.uk