you will have national insurance and tax deducted from those figures.
for a 37.5 hour week at adults minimum wage:
...............................Yearly............. .Monthly............weekly
Gross Pay .................£11,173.50........£931.13........ ....£214.88
Tax free Allowances.....£6,475.00.........£539.58.......... ..£124.52
Total taxable...............£4,698.50........£391.54.... ........£90.36
Tax paid......................£939.70..........£78.31. .............£18.07
National Insurance.........£600.44..........£50.04......... .....£11.55
Total Deductions..........£1,540.14.........£128.34..... .......£29.62
Net Wage...................£9,633.37..........£802.78. ...........£185.26
Employers NI................£698.69............£58.22....... ......£13.44