Is this tax code right?

It looks around the right figure but not possible to calculate it exactly without knowing your total income and also if you have any tax owing or owed from previous years . I have estimated your total income to be around 16. 5 k . Your tax allowence will be 12500 so you will need to pay tax on the remainder ( approx 4k ) . This will be divided by 12 to divide it equally over the tax year . The last figure is removed eg 3840 will be shown as 384 on the tax code and the letter denotes something other than standard ( eg another income source ) . You should be receiving you pension without any tax being taken and tax will be taken from your salary. Hope this helps explain it a bit .

Sounds about right to me too.

Assuming you work a regular 18 hours per week that takes you to around £9,000 salary, plus your State Pension of around £7,300. The SP will be tax-free and only the first £3,840 of your salary will be taxed.

Thank you both so much, you have definitely put my mind at rest 👏🏻👏🏻👏🏻💐💐💐