When Should You Start Planning Your Office Christmas Party? A Month-by-Month Timeline
A month-by-month guide to planning your office Christmas party in London, covering when to book caterers and venues, deposit timelines, and dietary comms.
Every office manager in London has had the same experience at least once: it's late November, the team is asking about the Christmas party, and every caterer and venue worth booking is already booked up. The honest answer to "when should I start planning?" is earlier than you think, and this guide walks through exactly what to do and when, so you’re never going to be left scrambling at the last minute ever again.
Why office Christmas parties get booked up so early
In practical terms, December is a shorter month with the Christmas holidays. Every company in London wants a slice of that window and it’s a notoriously busy events season from November onwards. The best caterers and venues all have limited capacity and get booked in advance months ahead, we’re not talking about weeks here when it comes to lead time.
If you’ve ever wondered why you can never seem to get a space at the venues you’re booking when you call in October - it's because someone else booked it in August.
The month-by-month planning timeline
Mid-Summer: Set the date and budget
This is earlier than most people expect, but it's the right time to start if you want real choice over venue and caterer. Confirm your budget with finance, get a rough headcount from department heads, and settle on two or three possible dates before anyone else locks them in.
By Early September: Book your venue and caterer
By this time the best London venues and caterers are already taking Christmas bookings, and the good ones fill up fast. This is when you should be confirming your date, paying any initial deposit, and getting a written agreement in place. If you're catering an off-site event, book the venue and caterer at the same time, since availability at one often depends on the other.
Mid-to-late September: Confirm the format and menu direction
Once the date and venue are locked, this is the right time to have a detailed conversation with your caterer about format. Sit-down dinner, buffet, canapés and bowl food, or something more relaxed like a grazing table setup all suit different event styles and budgets.
October: Send the save-the-date and start collecting dietary information
Sending the date out in October gives people enough notice to plan around it, and starting dietary and allergy collection this early means you're not chasing people in late November and December when everyone is busiest. A simple form asking for dietary requirements, allergies, and any access needs makes this far easier to manage than emails.
November: Confirm final headcount and finalise the menu
Most caterers will ask for a final headcount and confirmed menu somewhere between two and four weeks before the event. November is when you should be closing out the guest list, chasing any outstanding RSVPs, and confirming final numbers with your caterer. This is also the point to confirm any final dietary accommodations directly with them.
Early December: Final details and day-of logistics
In the final weeks before the event, confirm arrival times, setup access, staffing numbers, and any last-minute changes to headcount. Most caterers build in some flexibility here, but it shrinks the closer you get to the event date, so try to lock final numbers as early in this window as possible.
How far in advance should you pay a deposit?
Deposit timelines vary between caterers, but as a general pattern in London, expect to pay a deposit to secure your date at the point of booking, which for Christmas events typically means early September for a mid-December event. The remaining balance is usually due closer to the event, often two to four weeks out, once final numbers are confirmed.
Always get the deposit and cancellation terms in writing before you pay anything. Reputable caterers will have clear, written terms rather than a vague verbal agreement.
Managing dietary requirements ahead of a Christmas party
Christmas events tend to have higher attendance than a typical office lunch, which means a wider range of dietary requirements to manage. Starting this process in October rather than December gives your caterer real time to plan a menu that works for everyone, rather than scrambling to accommodate last-minute requests.
A few things that make this easier:
Use a simple digital form rather than email replies, so responses are easy to collate
Ask specifically about allergies as well as preferences, since these require different handling
Share the final dietary summary with your caterer two to three weeks before the event, not the day before
Confirm with your caterer how they label dishes on the day, particularly for allergens
What if you're planning later than August?
If you're reading this in November and haven't started yet, don't panic. Good caterers do sometimes have late availability, particularly for smaller events or dates outside the most popular first two weeks of December. Your options will be more limited, and you may need to be flexible on date or format, but it's usually still possible to put together a good event. The key is to start immediately rather than waiting for the perfect moment.
FAQ: Office Christmas party planning in London
How early should I book a caterer for a Christmas party in London? August and early September is the ideal window for a mid-December event, giving you the best choice of caterer and venue. Booking by mid-October is still workable, but your options narrow considerably after that.
When should I collect dietary requirements for a Christmas party? Start collecting dietary information in October, giving your caterer at least two to three weeks' notice before the event. This gives them enough time to plan a menu that properly accommodates allergies and preferences.
How much deposit do caterers usually ask for on Christmas bookings? This varies by caterer, but a deposit at the point of booking is standard practice, with the remaining balance due closer to the event once final headcount is confirmed. Always get these terms in writing.
What happens if my headcount changes after I've booked? Most caterers allow some flexibility on final numbers, but this typically closes two to four weeks before the event. Confirm your caterer's specific cutoff at the time of booking so you know your deadline.
Ready to lock in your December date? Take a look at our Christmas catering menus and get in touch for availability, or read our guide on how to choose an office caterer in London if you're still comparing options.
