If this was referred to children’s services (or the police), they would usually approach it as possible child sexual exploitation / grooming, not just a “relationship issue.”
They would likely:
1. Carry out a safeguarding assessment
- Speak to you and your son
- Try to understand:
- How contact started
- Power imbalance (age, control, secrecy)
- Whether there’s coercion, gifts, pressure, or emotional dependency
Even if your son says he’s happy, professionals don’t rely on that alone at 16.
2. Consider multi-agency involvement
They may involve:
- Police (especially given the age gap and meetings)
- School/college
- Health services
This can become a multi-agency safeguarding response, not just a parenting issue.
3. Focus on risk, not blame
They won’t be looking to “get you in trouble” — they’ll be asking:
- Is this young person safe?
- Is there a risk of harm or exploitation?
- How can we reduce that risk?
4. Potential actions
Depending on what they find:
- Disruption activity (e.g. police warning the adult)
- Safety planning with your son
- Encouraging him to stop contact (but not always forcing — because of his age)
- Supporting you to manage it at home
The really difficult reality
At 16 in the UK:
- He is below 18 (still a child in safeguarding terms)
- But also old enough to resist control and make his own decisions in practice
That’s why this feels so stuck — you can’t physically stop him, but the risk is still real.
What you can do (right now)
This is the bit that matters most.
1. Keep the relationship with your son intact
I know it’s incredibly hard, but if he feels:
- judged
- controlled
- or “ganged up on”
…he’s more likely to:
- go anyway
- stop telling you anything
Try to shift tone slightly from:
“This is wrong”
to:
“I’m worried about your safety — help me understand what this is like for you”
That doesn’t mean you approve — it keeps the door open.
2. Be honest about your concern (without escalating)
You can say things like:
- “I’m not angry that you care about someone”
- “I am worried about the age difference and your safety”
- “If anything ever felt off, you could tell me and I wouldn’t say ‘I told you so’”
That last bit is huge.
3. Try to get basic safety information
Even if he won’t stop, aim for:
- Where he’s staying
- A contact number
- Agreement to check in
It may feel like you’re “allowing it,” but actually you’re reducing risk.
4. Address what happened with his brother
Right now your younger son likely feels:
- exposed
- humiliated
- controlled
Even if ds1 was acting out of protection, it escalated things.
It might help to say:
- “That situation got out of hand — I’m sorry it’s made things harder for you”
You’re not endorsing the situation — you’re repairing trust.
5. Get support yourself
You don’t have to manage this alone. You could:
- Speak to your GP
- Contact your local safeguarding hub (you can do this as a parent)
- Reach out to organisations like:
- about:blank NSPCC (they have a helpline for parents in exactly this situation)
They can advise without immediately “blowing things up.”
About the man
I’ll be direct, because it matters:
A man in his 30s forming a secret relationship with a 16-year-old, and facilitating trips to London without parental knowledge, is a significant red flag from a safeguarding perspective.
Even if your son experiences it as mutual, the power imbalance alone is enough for concern.