UK power supply is 230V at 50Hz. It is compatible with the rest of Europe but a continental to British connector adaptor will be required.
For visitors from North America, note that the voltage is higher than US and Canadian standards. Some power supplies and equipment will operate on 90V to 260V so they will work with just a connector adaptor. That is the case for most laptop supplies. Other equipment may be fixed at 110V, in which case, they cannot be used safely in the UK without an additional power converter (a 230V to 110V transformer for example). Every power supply has the input voltage marked on it. Be sure to check each power supply before connecting it to a UK supply.
Suitable connector adaptors are available in many hardware and electronics stores in England as well as in airport stores. Although the airports are the most expensive place to buy them, it saves a lot of time searching for stores that sell them. Note that the connector adaptors DO NOT change the voltage.
Yes! you need to use a power adapter as well a plug adapter in Egypt from the UK.
For the UK, you will need a Type G plug adapter.
To use electronic devices in the UK, you will need a Type G adapter.
Check your laptops power adapter to see if it will handle both 240v(UK) and 110v(US) if it can handle 240v (which I believe most can) then all you need is a UK plug adapter.
For Australia, you will need a Type I power adapter.
You will need a Type C or Type F power adapter for Iceland.
For Brazil, you will need a Type N power adapter.
For Chile, you will need a Type L power adapter.
you should not need an adapter to charge your phone, but you would need one to plug into the power socket. These vary, depending in where you go in the continent. I live in the UK, and the plugs are like this:II IOne above two.For more info, search UK socket in Google
In Dublin, you will need a Type G power adapter to plug in your electronic devices.
European two pin, a US adapter will work.
To ensure your electronic devices are compatible with power outlets in India, you will need a Type D power adapter. This adapter will allow you to plug in your devices and use them safely in India.