A Retired Bookmaker's Confession: How He Set Odds Against You For 23 Years — And How He Made £17,692 In 90 Days Turning That Knowledge Against His Former Employers

I want to be honest with you before I say anything else.

My name isn't Martin Kavanagh. I'm using a pen name — I signed a non-disclosure agreement when I left my last employer eighteen months ago, and if I published this under my real name they would come after me. That's not a dramatic flourish. It's just true.

But everything else I'm about to tell you is real. The career. The figures. The system. The bets.

I spent twenty-three years inside the UK betting industry. First as a junior odds analyst at a major national bookmaker in my late twenties. Then as a senior odds compiler and eventually head of risk at a second firm, one of the biggest in the country.

My job, every day, was to make sure that people like you couldn't win. Not in a dramatic way — not by cheating or fixing races. The system doesn't need to cheat. It's built so that it doesn't have to.

My father was a horse racing man. Not a gambler in any reckless sense — a careful, methodical man who genuinely understood the sport. He studied form. He watched races. He kept records going back decades. He knew more about certain trainers and courses than most professionals.

He lost steadily his entire life.

Not because he was stupid. Not because he was undisciplined. Because the odds he was betting into were built to ensure that even correct selections, over time, produce a net loss. I knew that. I was one of the people building those odds — and I was very good at it. I said nothing, because I was doing well out of a system that was quietly taking money from people like him every single week.

I'm not asking for sympathy. I made a good living and I knew exactly what I was doing. But when he died three years ago, I found his betting records — forty years of carefully kept notebooks — and I sat with them for a long time.

After I retired, I started using everything I knew about the industry — not to set odds, but to find the places where those odds could be beaten. Where the system I'd helped to build had exploitable weaknesses. It took months of testing before I trusted it enough to track results properly.

What I found surprised even me.

I'm not going to dress this up. Here's exactly how it works — from someone who built it.

That last point is the foundation of everything I now do. I spent twenty-three years learning which race types bookmakers price carefully and which they price loosely. The ones they price loosely are where the money is.

Bookies Advantage is not a tipster service in any conventional sense. I don't pick horses because I like them or because I have a contact at a stable. I select bets using a framework built entirely from my knowledge of how odds are set — and specifically, where they are set badly.

The system targets four specific race types where my twenty-three years of experience tells me the bookmakers' pricing models are structurally weakest. I won't detail them here — that knowledge is what members pay for. But the principle is simple.

Every morning, I identify the races that fall into my target categories. I assess the market for each one using the same analytical framework I used to set odds. When I find a horse that the market has undervalued relative to what the data says its true probability should be, I bet it.

That's all there is to it. No gut feelings. No tipster's intuition. No inside information from trainers — I don't use that, and I don't need it. Just twenty-three years of knowing exactly how these markets are built and where they can be beaten.

I started with £100. I kept records of every bet from day one — not because I planned to share them, but because I always kept records. Old habits.

Every figure above comes straight from my own betting records, logged bet by bet from day one. I'm not asking you to take my word for it — the account statements are available on request to any member who wants to see them. I spent twenty-three years in an industry where I insisted on verifiable data. I apply the same standard to my own results.

You've already seen four of last week's winning selections above. That's not cherry-picked from 90 days — that's what a normal week looks like.

I want to address the obvious question directly, because it's the one I'd ask if I were reading this.

If this system is working, why share it at all?

Two reasons. The first is the honest one: those forty years of my father's notebooks. I am under no illusion that sharing a betting system with a small group of people compensates for twenty-three years of helping to take money from men like him. But it's something. And the retirement pension I'm comfortable on means I'm not doing this for the £37.

The second reason is practical: Bookies Advantage only works if it stays small. If too many people are backing the same selections, two things happen. The odds shorten before everyone can get on. And the bookmakers' monitoring systems detect the pattern and start restricting accounts.

I've set a hard limit of 100 members. That's the number I've calculated — based on knowing exactly how bookmakers track betting patterns — that allows us to remain invisible. Any more than that and we become visible. Visible means restricted. Restricted means the edge disappears.

This is a genuine hard cap, not a marketing device. When 100 places are taken, I will close this page and it will not reopen.

• 01
  You receive an email every morning before 11am — Martin's selections for the day, clearly laid out with the race details, his reasoning, and the stake guidance. Typically 2–4 bets depending on how many qualifying races that day meets his criteria.
• 02
  You place the bets with any bookmaker — online or high street. Martin recommends maintaining accounts with at least three different bookmakers simultaneously. He explains exactly which ones to use and how to avoid triggering restriction algorithms.
• 03
  You receive Martin's restriction avoidance guidance — this alone is worth the trial fee. A practical document explaining exactly how bookmaker monitoring systems work and how to stay below their radar. Written by someone who built one of those systems.
• 04
  Full 30 days access to Bookies Advantage — every racing day, every selection, with the full context of why each bet was placed. At £50 win / £25 each way stakes — what Martin uses — the verified monthly average is £5,897.50. Tax-free.
• 05
  Direct access to Martin — questions answered within 24 hours on racing days. He won't always answer questions about specific bets before they've run, but he will explain his reasoning after.