The verdict in three sentences
In a London broadcast group, revenue leaks between three moments: the airtime booking, the actual transmission of the spot and cash collection. Without automated as-run reconciliation, make-goods are missed, agencies dispute invoices and a few percent of revenue quietly disappears. An ad sales and traffic platform that links booking, playout logs and billing pays for itself within a year for a group with 5 stations or more.
Where the revenue goes missing
Take a mid-sized London media group: 2 regional or community TV channels, 3 DAB+ and online radio stations, a sales team of 14 and around 2,800 spots a week. Clients are media agencies, retailers, local authorities and charities. Bookings still run through spreadsheets, email and a traffic log that the playout operator checks manually.
The weak points are familiar. A peak spot is bumped by breaking news and nobody schedules a make-good. Two sellers sell the same break. The proof of transmission is rebuilt at month end and the agency pushes back. Invoices go out 20 to 30 days after air and dunning depends on one credit controller.
| Leak point | Current state | Estimated impact (2026 estimate) |
|---|---|---|
| Spots bumped without make-good | 3 to 5% of spots | 1 to 3% of ad revenue |
| Breaks oversold then cancelled | 1 to 2 a week | 0.5 to 1% of revenue |
| Proof of transmission disputed | 8 to 12% of campaigns | payment delayed 30 to 60 days |
| Late invoices | 20 to 30 days after air | tighter cash flow |
| Bad debt written off | 1 to 3% of billings | straight loss |
| Discounts outside the rate card | not tracked | 1 to 2% of revenue |
The features a modern ad sales stack needs
An ad sales and traffic platform covers five stages. Rate card and inventory: each break (daypart, programme, station) has a capacity in seconds, a price and modifiers (peak, sport, seasonal). Booking locks the slot as soon as the order is confirmed, prevents overselling and suggests equivalent free slots. Traffic logs are generated per station and pushed to the playout automation system. As-run reconciliation reads playout logs, flags missed spots and proposes make-goods automatically. Billing and credit control issue invoices at campaign end in GBP, with automated reminders at day 15, 30 and 45, plus agency commission and VAT handling.
In the UK, the platform must also export data for audience measurement and agency reporting, and comply with UK GDPR for contact data.
| Option | Indicative 2026 cost | Lead time | Fit for a mid-sized group |
|---|---|---|---|
| Spreadsheets and email | almost nil | immediate | no audit trail |
| Enterprise broadcast traffic suite | GBP 60,000 to 200,000 plus 18 to 22% a year | 6 to 12 months | powerful but heavy for 5 stations |
| Cloud radio traffic SaaS | GBP 300 to 1,500 per station per month | 1 to 3 months | radio only, weak on TV |
| Custom ad sales and billing layer | GBP 30,000 to 70,000 | 4 to 6 months | matches your rate card and playout |
| Annual maintenance of custom build | 10 to 15% of project | ongoing | changes included by contract |
Kolonell works on this type of project on quote, after a scoping workshop on your rate card, stations and playout systems. See our custom web applications offer.
Mini case study
Oliver, sales director of a London broadcast group, bills GBP 3.2 million of advertising a year across 5 stations. A three-month audit shows 5% of revenue lost to missed make-goods, overselling, untracked discounts and bad debt, GBP 160,000 a year.
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With a custom ad sales layer at GBP 55,000 and GBP 7,000 of annual maintenance, the group recovers 60% of that leakage in year one, GBP 96,000. Average debtor days fall from 62 to 40, freeing around GBP 190,000 of cash. Payback comes in about 7 months. Even on a cautious 30% recovery, the gain of GBP 48,000 covers most of the build in year one and all of it in year two.
FAQ
How much does broadcast ad sales software cost in London in 2026?
A custom build ranges from GBP 30,000 to 70,000 depending on stations and integrations, as a 2026 estimate. Enterprise traffic suites often start at GBP 60,000 with 18 to 22% annual maintenance.
Can it produce proof of transmission agencies accept?
Yes, if it reads playout automation logs: each spot is timestamped to the second. Groups that automate reconciliation cut disputed campaigns from 8 to 12% to under 2%.
Does it replace our playout system?
No. It sits upstream and downstream: it sends the traffic log to playout and reads the as-run log back. Your existing automation stays in place.
Can it handle agency commission and VAT?
Yes, the standard 15% agency commission and 20% VAT are applied per order, with self-billing exports when agencies require them.
How long until we are live?
Allow 4 to 6 months, with a pilot station live in 10 to 12 weeks. Other stations follow every 2 to 3 weeks.
Let's scope your project. We map your rate card, stations and cash collection chain, then deliver a pilot on one station before the full rollout over 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.
