Hi all, I am looking for advice please....is it worth buying btc at a lower rate on sites like localbitcoins.com and selling them on at a higher rate? Is it worth doing and is there actually money to be made from doing this please? Any advice greatly appreciated, thanks

Thanks all, everyones advice much appreciated
Thanks for taking the time to answer and advise.

Hi all, sorry in advance if this is a silly question, but am bit of a newbie to this - please can someone advise me on how I transfer bitcoins from my wallet (using Electrum 2.3.2) to my bank account? Do I need to change/sell them back to GBP first via localbitcoins or similar site, or is there a way of transferring directly from wallet please?
Thanks in advance