Digital Signage Market Research in Europe

I'm looking for an experienced researcher who would have some knowledge about advertising-ideally Digital signage market. I want to find out about that market in Europe. Obviously I don't expect the full report from each european country. I would say to mainly focus on UK market and throw in some information and numbers from Europe. Please find the list of questions below. Obviously I would expect to provide some links for the source of that information to be able to verify. Digital Signage Market in Europe 1. Market What is the forecast for the progress of the advertising market. How will “digital” sector grow? Statistical data and figures. 2. Technology How is Digital Signage market structured at the moment? What are the offers, types and what are the prices of DS systems? Who is distributing/selling DS systems (the biggest providers)? What is the offer for DS in 3d and multitouch? How does it work and who makes the content? What kind of problems market might face? What is the market saturation at the moment? How many systems were sold? What sales forecast is expected in coming years? 3. Competition DS networks in Europe. What is their structure? (Are they private networks or owned by advertising agencies) How many small networks and how many large? Examples How do they provide the service (time spot)? Do platforms who associate/connect networks exist? If so, how do they work/operate and profit? How many screens (units) and networks are in particular country? How many indoor, and how many outdoor? Can market saturation be measured? 4. Advertising in DS What are the prices? What is the process of creating the campaign? Any ways to verify the campaign?(way of checking if we got what we paid for) Who is the most often client/buyer? What are the pros and cons of the DS campaign? What are the trends? 5. Prices in advertising industry What are the average prices being paid in most popular media (closest competition to DS like internet, billboards, outdoor LED screens, radio, local press) What is the cost of using advertising agency? What is the average cost to get to 1000 people/audience? 6. Advertisers Who are the biggest advertisers? Small and medium companies or big international companies? What do they expect? What is their typical budget? Budget examples with figures.