Draft a client newsletter

I work in marketing at an accountancy firm. Help me draft this month's client newsletter.

Context: Recipients are owner-managers, landlords, sole traders and employers. They open for deadlines and changes that affect their own tax bill, and skim the firm's news.

Before you start, ask me for anything missing from this list:
- The material for this issue
- Who receives it
- The one thing we want readers to do
- Required footer wording

Then:
1. Pick the lead item most useful to the reader.
2. Write the lead in 120 to 200 words, then up to three short items.
3. Write five subject lines under 50 characters with preview text.
4. Tell me what you cut.

Give me:
- Subject lines with preview text
- The newsletter
- Items cut and why

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:
- Every deadline, rate and threshold quoted, with the tax year stated
- General information kept separate from advice to any one client
- Professional body wording and unsubscribe details in the footer