23/05/2026
20+ years hiring in London construction. I'll say the quiet part out loud.
Most people don't lose the job because they can't do the work. They lose it because they talk themselves out of it in the first 5 minutes.
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1. They slag off the old boss. "I worked there 10 years and now they are going bust." Mate, that company paid your wages. Fed your family. Maybe helped when you were skint. If you talk about them like rubbish, I'm already thinking: that's me in two years.
2. They don't know who they called. CVs fired everywhere, no checking, no clue about company, trade or location. I joke: "Sorry mate, we are a spaceship company." Back comes: "Oh sorry, I am after carpentry." If you can't check who you rang, why trust you with drawings, RAMS or a tight programme?
3. They take offence at normal questions. A question isn't an attack. If I ask about experience, gaps or tickets, I am trying to see where you fit. Good candidates answer clearly. Weak ones get defensive and ruin it themselves.
4. They don't know what job they want. "I can do anything, but I want carpenter money." Or: "I can be PM, site manager, supervisor, fixer, labourer, even help the cleaner." Flexibility is good. Confusion is not. Pick a lane.
5. They only want an offer to squeeze the current boss. Get it, run back and say: "Match it or I am gone." Short game. Construction is small. People remember. Burn the bridge today and you may need it tomorrow.
6. They lecture the interviewer. One simple question turns into a 20-minute podcast about how the industry should work and every previous boss was wrong. I don't need your life story. I need straight answers: what have you done, where, and what can you do?
7. They open with money. First 10 seconds: "How much you paying?" Money matters. Nobody works for fresh air. But before I understand your experience, slow down. Show value first. Then we talk money properly.
8. They talk in slogans. "Hard-working." "Reliable." "Team player." Everyone says that. Nobody says, "I am lazy and unreliable." Tell me one job, one problem you sorted, one system you know. Specifics beat slogans.
9. They big up the CV until it becomes fantasy. "Supervisor" because they once organised two lads. "Site manager" because they held the drawings. "Cladding expert" but cannot explain the basics. On site, the truth comes out. Better to say: "I haven't done it yet, but I will learn."
10. They forget the interview starts before the interview. Late replies. Missed calls. No CV. No location. No availability. Then they wonder why nobody calls back. The interview starts from the first message.
I have seen strong CVs lose because of attitude.
I have seen less experienced lads get a chance for being straight, respectful and honest.
Skills get you noticed. Behaviour gets you trusted.
In construction, trust is not a bonus. Trust is the job.
Every employer has a number 11.
P.S.
Some candidates will get annoyed, not because it's wrong, but because it sounds familiar.