Event and Database Management (inc invoicing)

We are a professional services membership organisation and we need someone to help manage our approx. 10 events per annum (for example organising the event; liasing with event hosts; managing attendees; creating name badges; liasing with event hosts and caterers; general management of a membership database). This will also involve managing some invoicing and credit control aspects. All of the events are currently in and around City of London and the person we choose for this is likely to have to attend each event - for example to 'meet and greet' and manage the event on the ground. Therefore a London base is essential as is previous experience of this sort of thing.