Visitors attending tours at all buildings must bring photo ID in order to gain admittance.
Valid forms of ID are:
Passport
Driving licence
Biometric Residents permit
Citizen card
Validate UK ID card
HM Forces ID card
HMRC Access All Supervisor card
Police warrant card
Photographic travel card (eg. Freedom Pass)
Please note that only adults aged 18 or over need to bring ID on the day – it is not required for children under 18.