Index:: 02
Sector:: Weddings & Events
Type:: Web app
Year:: 2026

Diamond Events · Weddings & Events

Diamond Events

Diamond Events decorates and caters South Asian weddings across Scotland, where one wedding is a Mehndi, a Nikkah, a Baraat and a Walima, each with its own menu and hundreds of guests. Menus, quotes, dietary needs and payments lived in message threads and documents. We designed and built one platform for the whole business: a family app where a taste game becomes proposed menus, and an office app that runs the pipeline, kitchen, allergens, rota and money from the same records.

Diamond Events / East Kilbride / 2026

From the first swipeto the last prep sheet.

A South Asian wedding in Scotland is not one event. It is a Mehndi, a Nikkah, a Baraat and a Walima, often a reception too, each with its own menu, its own guest list and hundreds of plates. We built Diamond Events one platform that carries a family from their first taste of the menu to the kitchen's final prep sheet, and runs the business in between.

Business engines: 14
Database tables: 109
Row-level security policies: 244
Automated tests: 2,379
Office and family screens: 55
Automated event types: 18

01 / The brief

One wedding, five events.

Diamond Events has decorated and catered South Asian weddings across Scotland for more than twenty years. One wedding is several functions over several days, each with its own menu, guest count, dietary needs, staff and payments, and all of it lived in message threads, documents and memory. Families had nowhere to see their plan, and the kitchen needed exact quantities and a reliable allergen picture for hundreds of guests at a time.

Function 01
Mehndi
Henna, music, street food
Function 02
Nikkah
Formal, served courses
Function 03
Baraat
The big entrance
Function 04
Walima
The groom's family hosts
Function 05
Reception
Mixed families, mixed menus

150 to 800 guests a function, halal by default, often booked more than a year ahead

Before

Menus agreed in WhatsApp threads
Quotes built in Word and Excel, sent as PDFs
Dietary needs gathered by hand from each family
Quantities and allergens worked out by hand for every function
Bank transfers matched to bookings by eye

After

The family plays a taste game and gets three menus back
Every quote version kept, signed in the app
Each household gives its own needs through a private link
Quantities and allergen matrices worked out from the locked menu
A reference per instalment, matched against the bank line

02 / Taste & Style

Menus you play, not menus you read.

Nobody enjoys choosing a wedding menu from a long PDF. The family swipes, the platform learns, and a proposal comes back with a reason for every dish. Try it: swipe right on what you would serve, left on what you would not.

StarterHalal

Chicken Tikka

Yoghurt, mustard oil, charred in the tandoor

Heat
Smoke
Richness
Street

1 / 8

What the platform has learned

Heat50%no signal yet
Smoke & grill50%no signal yet
Richness50%no signal yet
Street food50%no signal yet

Signature proposal, rebuilt on every swipeMehndi / 220 guests

Starter
Chicken Tikka
The starter families choose most, a safe place to begin.
Live station
Gol Guppay
The live station guests queue for.
Main
Lamb Karahi
The main most families settle on first.
Dessert
Ras Malai
The classic finish to a wedding meal.

The real engine scores a catalogue of 70 dishes for each function and returns Classic, Signature and Statement menus. The same swipes always give the same profile, so every proposal can be explained.

03 / The family table

Four phones. One menu.

Weddings are planned by families, not couples. Everyone plays on their own phone, and their answers are pooled with a weight for each role. Where they agree, the menu is settled. Where they do not, nobody is averaged away: it goes on the list for the tasting.

The bridex1
The groomx1
Mumx0.8
Big sisterx0.6

HeatPlaying
keep it gentlebring the chilli
Smoke & grillPlaying
slow-cookedstraight off the tandoor
RichnessPlaying
light and freshcream, ghee and butter
Street foodPlaying
plated and classiclive stations and chaat

The table says

0/4

Waiting for the family to play.

The tasting menu is built from exactly those disagreements, so the family tastes the dishes they are still arguing about and nothing else.

04 · Owner and staff

The office

The office opens on today: four functions this weekend, the kitchen over capacity on Saturday, one payment overdue and five things that need a decision. From there the team works through the pipeline, each event, the kitchen and the voice notes the chefs leave between shifts.

→Daily briefing with the weekend, money due and what needs attention
→Weekend board across every function and venue
→Kitchen view with job sheets, purchasing, ingredients and stock
→Voice notes from the team, transcribed and filed against the right event
→Owner-only costs, margins and insights

Diamond Events website, Today page — Recorded in the real office app, on its built-in sample data. Bookings, guests and money are made up.

05 · Couple and family

The family app

The couple and their family plan the wedding on their phones: a countdown to the first function, the menus as they come together, the guest links, the payments and a live view on the day. It runs in the browser today and as a native iPhone and Android app on Expo.

→Taste & Style game that becomes three proposed menus per function
→Quotes with every version kept, accepted in the app
→Guest links for RSVPs and dietary needs, no account needed
→Bank transfer details with a reference for each instalment
→Décor boards, tastings and a live view on the day

Diamond Events on iPhone, Taste & Style page — The site on iPhone

06 / Allergen safety

AI never decides what is safe to eat.

Eight hundred guests means somebody at the Walima has a nut allergy. Every dish carries its allergens, every guest gives their own needs through a private link, and the kitchen gets a matrix per function. That logic is plain code with tests behind it, and nothing a model writes ever reaches it.

9 safe/2 to check with the kitchen/3 off the plate

Allergen matrix for a sample menu, with the verdict for Table 4, seat 2, Tree nuts, anaphylaxis
Dish	Gluten	Crustaceans	Eggs	Fish	Milk	Mustard	Peanuts	Tree nuts	Verdict
Chicken Tikka					Contains	Contains			Safe
Gol Guppay	Contains								Safe
Lamb Karahi						May contain			Safe
Ras Malai					Contains			Contains	Off
Fish Pakora	May contain	May contain		Contains					Safe
Paneer Makhani					Contains			Contains	Off
Chana Chaat	May contain				Contains				Safe
Nihari	Contains								Safe
Seekh Kebab			Contains						Safe
Chicken Biryani					Contains			May contain	Check
Gajar Halwa					Contains			Contains	Off
Dal Makhani					Contains				Safe
Kulfi					Contains		May contain	May contain	Check
Lamb Chops					Contains	Contains			Safe

Contains May containSample menu, not Diamond's kitchen data

UK allergens on every dish, contains kept apart from may contain: 14
Dietary flags, each with a safe-plate rule the build will not ship without: 13
AI calls anywhere in the safety path: 0
Days after the event, then guest dietary data is deleted: 90

Anaphylaxis always raises a red flag on the job sheet, whatever the dish.

07 / Kitchen maths

Every number shows its working.

When the family locks their numbers, the kitchen side writes itself: quantities for every dish, batches, pick lists, a prep timeline from two days out and a job sheet ready to print. Each figure is covers times portion times service style times a buffer, so a chef can check it in their head. Move the slider.

Guests at the Walima450

150800

Kilos of food: 489
Batches: 21
Chefs on the line: 4

Production quantities with the working for each dish
Dish	Working	Kg	Batches
Chicken Biryani450 x 0.32 x 1.15 x 1.05	450 covers x 0.32 kg x 1.15 buffet x 1.05 buffer	173.9	5
Lamb Karahi450 x 0.22 x 1.15 x 1.05	450 covers x 0.22 kg x 1.15 buffet x 1.05 buffer	119.5	4
Chicken Tikka450 x 0.15 x 1.15 x 1.05	450 covers x 0.15 kg x 1.15 buffet x 1.05 buffer	81.5	5
Dal Makhani450 x 0.12 x 1.15 x 1.05	450 covers x 0.12 kg x 1.15 buffet x 1.05 buffer	65.2	3
Gajar Halwa450 x 0.09 x 1.15 x 1.05	450 covers x 0.09 kg x 1.15 buffet x 1.05 buffer	48.9	4

Sample factors for illustration. In the platform the kitchen lead sets them per dish, and a weekend with two big functions shows up as a capacity warning days before it becomes a problem.

08 / One record

Ten stages. Nothing re-typed.

Every booking moves through the same ten stages, and each move does work on its own: emails, reminders, documents, matching. The family, the office and the kitchen are all looking at the same record, so there is never a second copy to fall out of date.

Stage 01
Enquiry
Logged with the date, venue and source. The family is invited to play.
Stage 02
Qualified
Date checked against kitchen capacity for that weekend.
Stage 03
Tasting booked
Disputed dishes go on the tasting menu. Reminders 48 hours out and at 9am on the day.
Stage 04
Tasted
Scorecards from the tasting become one-tap swaps.
Stage 05
Proposal sent
Quote versioned and kept. The family gets an email and a push.
Stage 06
Confirmed
Signed in the app with a typed name and server time. Deposit reference issued.
Stage 07
Numbers locked
Covers freeze the menu. Job sheets and the allergen matrix are generated.
Stage 08
Delivered
Floor mode on the day. Allergen table cards printed for every table.
Stage 09
Balance paid
The bank line is matched to the instalment reference.
Stage 10
Closed
Actual costs against the quote feed the owner’s margins. Dietary data deleted at 90 days.

Results

Proposed menus per function

Booking stages, each automated

UK allergens on every dish

Automated tests

01Families plan menus, guests and payments in one app instead of long message threads
02A taste game turns the whole family into a menu, and only real disagreements go to the tasting
03Kitchen quantities, job sheets and allergen matrices come straight from the locked menu for each function
04Every quote version and change is kept, so the family and the office always see the same numbers
05Guests give their own dietary needs through a private link, and that data is deleted 90 days after the event
06Rota, shifts, supplier packs, purchase orders and bank matching run from the same event record

Start a project like this

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Web app from £8,000

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Start a project like this Call 0141 345 5841

Studio: Unit 204b, 36-38 Washington Street, Glasgow G3 8AZ. Phone 0141 345 5841.

Spec Sheet

A booking and operations platform for a Scottish wedding caterer: a family app where menus are played rather than picked, and an office app that runs the pipeline, kitchen, allergens, rota, suppliers and money from the same records. Fourteen pure TypeScript engines, Supabase with row-level security on every table, and a native iPhone and Android app on Expo.

Architecture

Framework: Next.js 16 App Router, React 19, TypeScript strict
Structure: pnpm and Turborepo monorepo: web and mobile apps over five shared packages
Business rules: Fourteen pure TypeScript engines (taste, matching, pricing, quotes, kitchen, dietary, payments, purchasing and more) with no I/O
Database: Supabase Postgres in London: 109 tables, 244 row-level security policies
Messaging: Transactional outbox with 18 event types, dispatched on a schedule
Mobile: Expo and React Native, sharing the same engines and contract

Integrations

Email: Resend with React Email for quotes, reminders and receipts
SMS & WhatsApp: Twilio, WhatsApp behind a switch until approved
Accounting: Xero invoices per instalment and bank lines for matching
Calendar: Microsoft 365 calendar over Microsoft Graph, two-way sync in progress
AI: Vercel AI Gateway for voice-note transcripts and wording, never for prices or safety

Performance

Hosting: Vercel and Supabase, both in London
Realtime: Family and office see changes live, via database triggers

Code Quality

→2,379 automated tests across the engines, database, web and mobile
→Database and security tests on in-process Postgres (PGlite)
→Allergen and dietary logic is deterministic code only
→Money held as integer pence throughout
→Quotes, payments and menu versions are append-only
→Dietary data deleted 90 days after the event

Technologies

Next.js 16
React 19
TypeScript
Supabase
PostgreSQL
Turborepo
Expo
React Native
Tailwind CSS
Vercel AI Gateway
Resend
Twilio
Xero
Microsoft Graph

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