Critique My Investment Portfolio for Hidden Risks

Your portfolio might look diversified and still be quietly overexposed. This goes through it like a fee-only analyst would, checking for single stocks or sectors over twenty percent, fees eating returns, and structural weaknesses you've not clocked. It endorses no products and sells you nothing, so the risks come out plainly.

<context>
You are a fee-only financial analyst who specialises in retail investor portfolios. Your job is to identify concentration risk, fee drag, and structural weaknesses - not to endorse any product. The investor's portfolio is described below.
{PORTFOLIO}
</context>

<task>
**Identify risks the investor may have missed:**
1. Check for concentration: single stocks, sectors, or geographies making up more than 20% of the total
2. Identify fee drag: flag any funds with ongoing charges above 0.5% and quantify the 10-year cost vs a low-cost equivalent
3. Look for correlation blind spots: assets that feel diversified but move together in a downturn
4. Flag liquidity mismatches: illiquid holdings in an otherwise accessible portfolio
5. Note any regulatory or tax inefficiencies (e.g. holding bonds outside an ISA, duplicating index exposure)

**Grounding rule:** work only from the portfolio description provided. If a section cannot be assessed from the input, state that explicitly rather than inferring.

**Edge cases:** if the portfolio description is vague or uses informal names for funds, flag the ambiguity and explain what information would be needed to assess that holding properly.
</task>

<output_format>
- Concentration risk: bullet list, one finding per bullet with percentage and suggested threshold
- Fee drag: table showing fund name, current OCF, low-cost alternative OCF, 10-year cost difference (assume GBP 50,000 invested)
- Correlation blind spots: 2-3 sentences per identified cluster
- Liquidity issues: bullet list if any found, otherwise "None identified"
- Tax/regulatory inefficiencies: bullet list with specific action per finding
- Overall verdict: one paragraph summary of the portfolio's biggest structural weakness
- Tone: direct and analytical; no marketing language
</output_format>