Why interviewers ask about notice periods
The notice period question is a practical one: the interviewer needs to know how quickly you can start. This affects project timelines, budget cycles, whether an existing employee can be released, and the overall hiring plan. It is also a soft signal about your seniority and contractual status: junior roles often have one to four weeks notice, senior roles in the UK commonly have three to six months, and highly specialised or regulated roles can have garden leave provisions that mean you cannot join a competitor immediately. Being clear and accurate about your notice period saves everyone time and avoids awkward renegotiation after an offer is made.
What to say
Be accurate and specific: "My current notice period is three months under my contract." Do not guess or round down — if your contract says three months, say three months. If you are not currently employed: "I am available to start immediately" or "I would want to take two weeks before starting to ensure I am fully ready." If you are between jobs but have a notice period at a contract you have not started yet (e.g., a freelance commitment): be explicit about that too. If your notice period is long: "My contracted notice period is six months, but in my experience these are often negotiated in practice. I would be open to discussing what flexibility my current employer might have, and I would also be happy to discuss a start date that works for both sides." Do not promise you can shorten it without checking first.
Garden leave and restrictive covenants
If you are a senior employee in financial services, technology, or other competitive sectors, your contract may include garden leave provisions (paid leave during which you cannot work for a competitor) or post-termination restrictions (non-compete, non-solicitation, non-poaching clauses). These are legally complex and vary in enforceability. Disclose them to your prospective employer honestly: "My contract includes a six-month non-compete clause in [sector]. I would want to take legal advice on its enforceability before giving you a firm commitment on start date." A new employer who knows about your restrictions can factor them in; one who discovers them after your start date has a problem.
Negotiating a shorter notice period
Most notice periods are negotiable. Your current employer may not need you for the full period, particularly if you are in a straightforward individual contributor role and your work can be transitioned. Approach the conversation with your current employer professionally: thank them for the time, offer a comprehensive handover, and ask whether a shorter period would be workable. Employers who are handled respectfully are more willing to be flexible than those who feel they are being abandoned. Frame it as: "I have been offered an opportunity I want to take. Could we discuss whether a departure by [date] would be workable?" Do not burn bridges for a few weeks of notice.