In the UK, salaries are always quoted as gross and figuring out your take home net pay or gross to net salary is your responsibility. This site has calculated carefully all possible gross annual salaries to give you the net salary you will take home. The net salaries are calculated to show the exact amount you will take home after the income tax and national insurance contributions for 2018-2019. You can also check hourly wage calculator which is useful especially for students.
Have a look at the calculator here: Take Home Pay Calculator