Reply to a job offer: accept it, ask for time or ask for a later start

Help me reply to a job offer.

The offer: [role, salary, start date]
What I want to do: [accept, ask for time to decide, ask for a later start]
My notice period: [e.g. one month]
Other things going on: [e.g. another interview Thursday]

Ask me up to 3 short questions first if anything important is missing. Wait for my answers.

Then:
1. A warm email for my situation.
2. What to say if they ring instead.
3. If I'm asking for time: how long is reasonable to ask for, and what to say if they push.
4. A checklist before I resign from my current job: written offer, contract or written statement, start date, any conditions like references or checks.

Only use what I've told you, leave blanks for anything I haven't given, and don't invent facts, dates or results. UK English.

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