IT Support Manager Interview Questions UK: 8 Real Questions and What Interviewers Want

Most IT Support Manager interviews in the UK follow a pattern, and knowing it beats guessing. Below are eight questions from our bank of 16, each with a note on what the interviewer is really after.

Eight IT Support Manager interview questions, and what the interviewer is thinking

1. How do you forecast demand and set staffing levels for a service desk, including shift patterns and peak periods?

Why they ask: Tests workforce planning ability and use of data to run an efficient desk.

2. What is your approach to reducing ticket volume through shift-left, self-service and automation?

Why they ask: Checks understanding of modern service desk strategy beyond simply responding faster.

3. How would you run a major incident, and what roles and communications do you need in place?

Why they ask: Examines leadership under pressure and knowledge of structured incident management.

4. Explain the difference between an SLA, an OLA and an underpinning contract, and how you would use them.

Why they ask: Tests knowledge of the service agreement structure that governs support delivery.

5. How would you choose and implement an ITSM tool such as ServiceNow, Jira Service Management or Halo?

Why they ask: Assesses ability to lead a tooling selection and transition, not just use a tool.

6. The finance director proposes outsourcing your service desk to cut costs. How do you respond?

Why they ask: Tests commercial thinking and ability to evaluate options objectively rather than defensively.

7. Tell me about a time you significantly improved the performance or customer satisfaction of a support team.

Why they ask: Looks for evidence of delivering measurable improvement through leadership.

8. What does an IT Support Manager do day to day, and how does it differ from being a team leader or an engineer?

Why they ask: Checks understanding of the shift from technical work to management responsibility.

A sample answer to question 1

How do you forecast demand and set staffing levels for a service desk, including shift patterns and peak periods?

I start with data. I would pull at least twelve months of ticket and call volumes by hour, day and month, and look for patterns such as Monday mornings, month-end finance peaks, new-starter intakes and the weeks after a major release or Patch Tuesday. I combine that with average handling times and the target response times in the SLA to estimate the number of analysts needed in each interval, using a workforce management approach similar to Erlang calculations for phone traffic, and add a shrinkage allowance of around twenty-five to thirty percent for leave, sickness, training and breaks. Shifts are then staggered to match demand, with a mix of early and late cover and a rota for out-of-hours support. I also plan for known events, such as a major rollout, by arranging extra cover in advance. I review the forecast against actuals monthly, adjust it, and use the figures to make a case for headcount or automation if demand is growing faster than capacity.

Common mistake to avoid: Staffing to the average rather than peaks; ignoring leave, training and sickness

Want the rest?

Full model answers, key points and common mistakes for all 16 questions are on the IT Support Manager interview questions page. The first five are free, no sign-up needed.