�5225.00 is the yearly personal tax allowance.
� 435.42 is the equivalent monthly allowance (1/12)
� 100.48 is the equivalent weekly allowance (1/52)
If you are paid monthly, the first �435.42 earned each month is tax free.
If you are paid weekly, the first �100.48 earned each week is tax free.
I cannot comment on your tax code (even if you had supplied it) since I do not know your personal circumstances and tax history. If you have reason to believe the tax code is incorrect contact your Tax Office.
http://www.direct.gov.uk/en/MoneyTaxAndBenefit s/Taxes/ReclaimingTax/DG_4015573