English Heritage Senior Membership for Two - Key InfoVoucher Validation Your voucher is valid until 01 Jul 20 You must validate book and use your voucher within the voucher expiry date.Duration: Your membership will last one year from point of redemption.Group Size: This membership is valid for two seniors and up to six children under 18 within your family group.Weather Dependent: NoSpectators: Any additional people are welcome but will need to pay on the day when they visit a property.Restrictions and Considerations: There are no fitness requirements.The minimum age for senior membership is 65 years.Requirements: There are no qualifications required.Availability: Your membership will be delivered Monday to Friday within 21 days of activation.