If you are a Commonwealth Citizen between ages of 17 and 30, you can do any type of work in UK!

Requirements / Conditions
• You can come to the UK for an extended holiday for up to two years and     can take up any form of     work.
• You will be expected to be on holiday for at least part of your time in the     UK over two years.
• You should have planned your employment so that it is an integral part of     your working holiday. For example,
•  you may have decided that you wish to spend some time in London and     so also wish to find work in London.
• You should be single, or are married to someone who also qualifies as a     working holidaymaker and wish to both be working holidaymakers.
• You do not have any dependent children who are aged five years or over,     or who will be five before the end of the two years as working holiday
     maker.
• You should have enough funds to support yourself until you find work     without requiring public funds.
• You should probably have enough money to support yourself for the first     month.
• You are able to pay for a return ticket or have at least enough money to     go onto another destination.
• You intend to leave the UK at the end of your working holidaymaker     status.

If you decide to stay longer while you are in UK, you can take up employment on a Work Permit if you are eligible under the immigration rules at that point in time.