Hi,
I'm green when it comes to altering the htaccess file to remove non www and index.php.
I think I've managed to redirect the urls to www however not sure if I've managed to remove the index.php.
I'm pasting the contents of the htaccess file here maybe someone can identify if I have unwanted lines of code and if it is up to standard (there are a lot of comments in #) not sure if needed but I've left them as I don't want to screw up anything. Thanks 
@package Joomla
@copyright Copyright (C) 2005 - 2016 Open Source Matters. All rights reserved.
@license GNU General Public License version 2 or later; see LICENSE.txt
READ THIS COMPLETELY IF YOU CHOOSE TO USE THIS FILE!
The line 'Options +FollowSymLinks' may cause problems with some server configurations.
It is required for the use of mod_rewrite, but it may have already been set by your
server administrator in a way that disallows changing it in this .htaccess file.
If using it causes your site to produce an error, comment it out (add # to the
beginning of the line), reload your site in your browser and test your sef urls. If
they work, then it has been set by your server administrator and you do not need to
set it here.
No directory listings
IndexIgnore *
Can be commented out if causes errors, see notes above.
Options +FollowSymlinks
Options -Indexes
Mod_rewrite in use.
RewriteEngine On
RewriteCond %{REQUEST_URI} ^/index.php/
RewriteRule ^index.php/(.*) /$1 [R,L]
Begin - Rewrite rules to block out some common exploits.
If you experience problems on your site then comment out the operations listed
below by adding a # to the beginning of the line.
This attempts to block the most common type of exploit attempts on Joomla!
Block any script trying to base64_encode data within the URL.
RewriteCond %{QUERY_STRING} base64_encode[^(]([^)]) [OR]
Block any script that includes a
