Joomla web developer (UK only)

I am looking for a UK based (preferably in the South East) Joomla expert to provide maintenance, support and development work on an as and when needed basis for an existing site.
* Must be demonstrably proficient in Joomla including incorporating video, social media and microsites
* Must be able to proactively solve problems to overcome any limitations of existing Joomla templates and plugins
* Must be able to accurately estimate the time required for a project based on a project brief
* Must be knowledgeable about security considerations with Joomla
* Must be able to work with an existing graphic designer

In your response, please provide details of:
* How long you have been developing with Joomla
* The number (approximately) of Joomla sites you have built
* Examples of sites you have personally built using Joomla
* What hosting, regular website content and database back up and support service (including security updates) you provide and their associated costs.