FOI release

Customer service data

Updated 21 November 2025
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Q1 Average call wait times SIA customer service phone lines for financial years 2021/22 - 2024/25
Not set Fiscal Year
Not set 2021/22
Not set 2022/23
Not set 2023/24
Not set 2024/25
Q2 Percentage of calls answered within SIA target time for financial years 2021/22 - 2024/25
Not set Fiscal Year
Not set 2021/22
Not set 2022/23
Not set 2023/24
Not set 2024/25
Q3 Average response time for written correspondence (email, letter, or online submissions) for financial years 2021/22 - 2024/25
Not set Service requests from businesses
Not set Fiscal Year
Not set 2021/22
Not set 2022/23
Not set 2023/24
Not set 2024/25
Not set Service requests from individuals
Not set Fiscal Year
Not set 2021/22
Not set 2022/23
Not set 2023/24
Not set 2024/25
Q4 Percentage of correspondence responded to within SIA’s target time frame in each year
Not set Service requests from businesses
Not set Fiscal Year
Not set 2021/22
Not set 2022/23
Not set 2023/24
Not set 2024/25
Not set Service requests from individuals
Not set Fiscal Year
Not set 2021/22
Not set 2022/23
Not set 2023/24
Not set 2024/25
Q5 Number of formal complaints for financial years 2021/22 - 2024/25
Not set NB - the data collated only relates to formal complaints. The entries marked with N/A, data was not recorded for those years
Not set Complaint type
Not set Service from Customer Support staff
Not set Unable to contact or delayed response
Not set Inaccurate advice or guidance given
Not set Poor Service from SIA staff
Not set No or slow response to messages
Not set Poor quality responses from SIA staff
Q6 Percentage of internal internal service level targets for financial years 2021/22 - 2024/25 for service requests
Not set a. Service requests for electronic documents
Not set Fiscal year
Not set 2021/22
Not set 2022/23
Not set 2023/24
Not set 2024/25
Not set b. Service requests from individuals
Not set Fiscal year
Not set 2021/22
Not set 2022/23
Not set 2023/24
Not set 2024/25
Not set c. Service requests from businesses
Not set Fiscal year
Not set 2021/22
Not set 2022/23
Not set 2023/24
Not set 2024/25