The verdict in three sentences
For an event caterer in London running 1,100 events a year, from 25 to 3,000 covers, custom management software costs between GBP 60,000 and 120,000 in 2026, versus GBP 250 to 600 per month for an off-the-shelf SaaS. The real gain shows up in gross margin: linking every quote to recipe specs and live ingredient costs adds roughly 3 points, worth tens of thousands of pounds a year. SaaS is fine up to about 300 events a year; beyond that, rekeying between quotes, purchasing and production costs more than the subscription.
What spreadsheets cost once you pass 1,000 events
With spreadsheets, every quote is recalculated by hand, purchase quantities are extrapolated from cover counts and production sheets are copied out for the kitchen. Errors creep in: a 15% rise in salmon or butter prices is not passed through to open quotes, and a missing allergen on a sheet can trigger a serious complaint. UK rules derived from retained EU 1169/2011 require information on the 14 major allergens, and Natasha's Law tightened labelling for pre-packed for direct sale items.
| Custom software block | 2026 range (GBP) | Expected gain |
|---|---|---|
| Modular quotes linked to recipe specs | 12,000 to 24,000 | Quote in 15 min instead of 1 h |
| Recipe specs and live food costing | 10,000 to 20,000 | Margin recalculated on every supplier change |
| Weekly consolidated purchasing | 8,000 to 16,000 | Overstock below 5% |
| Kitchen and pastry production sheets | 7,000 to 14,000 | No manual copying |
| Staff scheduling (event managers, agency staff) | 9,000 to 18,000 | Agency hours under control |
| Allergen management and labelling | 7,000 to 14,000 | Documented compliance |
| Invoicing, deposits and accounting link | 7,000 to 14,000 | Automated reminders |
The total ranges from GBP 60,000 to 120,000 over 4 to 6 months. Ongoing maintenance usually runs at 15 to 18% of the build cost per year, around GBP 900 to 1,800 per month. The same scope in Paris costs EUR 40,000 to 70,000, as London day rates are higher.
SaaS or custom: the 5-year comparison
| Criterion | Catering SaaS | Custom software |
|---|---|---|
| Entry cost | GBP 1,000 to 5,000 setup | GBP 60,000 to 120,000 |
| Monthly cost | GBP 250 to 600 | GBP 900 to 1,800 maintenance |
| 5-year total | GBP 16,000 to 41,000 | GBP 114,000 to 228,000 |
| Fit with house recipes | Partial | Complete |
| Multi-site and central kitchen | Often a paid add-on | Built in |
| Data and code ownership | No | Yes |
| Supplier connections (Bidfood, Brakes) | Rare | Possible via import or API |
Over 5 years custom costs more in cash, but it pays off once the margin gain exceeds GBP 25,000 to 35,000 a year, which happens quickly above GBP 4 million in revenue.
What to scope before starting
Start with your 200 best-selling recipes: they carry 80% of the margin. Have the head chef validate the recipe spec structure (portion weights, wastage, labour time), then the sales lead validate the quote template. Plan for kitchen tablets and an offline mode for event managers on site, since historic venues and marquees often have weak signal.
Mini case study
Emma, managing director of an event caterer in London, turns over GBP 5 million with a gross margin of 61%. She invests GBP 95,000 in custom software plus GBP 1,400 per month in maintenance. By linking quotes, recipe specs and supplier prices, gross margin rises to 64%: 3 points on GBP 5 million is GBP 150,000 a year. Counting only half of that gain, the project pays back in about 15 months. Her sales team also saves around 12 hours a week on quotes.
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FAQ
How much does catering software cost in London in 2026?
SaaS runs GBP 250 to 600 per month; custom software GBP 60,000 to 120,000, a 2026 estimate depending on modules and sites.
Does it handle allergen rules and Natasha's Law?
Yes: each ingredient carries its allergens, which flow automatically into recipe specs, quotes and labels. All 14 regulated allergens are covered.
Can we import our existing spreadsheet recipes?
Yes, migrating 200 to 800 recipe specs is part of the project, typically GBP 3,000 to 6,000 for cleaning and import.
How long until we are live?
Allow 4 to 6 months with a phased rollout: quotes and recipe specs first, then purchasing and staff scheduling.
Does staff scheduling respect working time rules?
The module checks the 11-hour daily rest and 48-hour weekly limits, then exports hours to payroll to avoid rekeying.
Let's scope your project. Share your event volume, recipes and current tools, and we will scope a GBP 60,000 to 120,000 system delivered in 4 to 6 months. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
