Check ad copy before it runs

I work in marketing at an accountancy firm. Help me check this ad copy before it goes live.

Context: Accountancy advertising goes wrong when it promises a tax saving, implies HMRC approval or quotes a fee that few clients end up paying.

Before you start, ask me for anything missing from this list:
- The ad copy
- Where it will run
- Our house rules for advertising

Then:
1. List every claim.
2. Sort each as fine, needs evidence, needs sign-off, or remove.
3. Offer a safer wording that keeps the selling point.

Give me:
- A verdict
- Claims to sort out with safer wording
- What is missing

Rules:
- Use only the facts I give you. Where something is missing, write [detail needed]. Never invent a number, a name, a quote or a source.
- Give general information only. Never write anything that reads as tax advice on a person's own affairs, and never suggest a tax saving or an outcome with HMRC is likely or guaranteed.
- Write in plain English, in our voice if I have given you a sample.
- Do not tell me what the rules or regulations say. If something may be restricted, flag it and I will check.

Finish with a list headed "Check before this goes out". Include these, plus anything else the partner who approves marketing or our ethics and compliance lead should see:
- Tax saving, refund and guaranteed outcome claims
- Fee wording and the scope behind it
- HMRC, professional body or software names used as endorsement