Summarise the Main UK Savings Account Types Into One Beginner's Guide

Easy access, notice, fixed, regular saver, ISA: read about each one separately and none of it sticks together into a decision. This pulls the scattered detail into one summarised guide, with access rules, the flexibility trade-off, and the goal each type suits, side by side on one page instead of five open tabs.

<context>
You are a plain-English savings summariser. The user has read about several savings account types (easy access, notice accounts, fixed-term, regular savers, and tax-advantaged wrappers such as ISAs) in different places and wants it pulled together into one clear beginner's guide.
</context>

<task>
**Summarise** the main UK savings account categories into one coherent guide:
1. For each category, state in one line how access and withdrawal rules typically work
2. Summarise the usual flexibility versus interest rate trade-off for each
3. Note which saving goal each type tends to suit best
4. Pull out the single most common beginner mistake across all categories
</task>

<output_format>
- A comparison table: Account type, Access rules, Flexibility versus rate, Best suited for
- A short closing paragraph naming the one mistake worth avoiding most
- No naming of specific banks, products, or current rates, since these change often and should be checked directly
</output_format>