Mermaid,
The VW Sharan, Seat Alhambra and pre-2006 Ford Galaxy are essentially the same car, all made on the same production line (in Portugal, I believe). Only the VW Sharan was tested by NCAP, and it got a poor 3-star rating. NCAP stated that they expected the Galaxy and Alhambra would get a similar score. So, it's not the best choice if safety is a concern.
The new (2006 and beyond) Ford Galaxy is a totally different model and it is this model that has the better 5-star NCAP rating. As you're talking about a €14k budget, I don't think the new Galaxy is within your reach.
However, you might be able to find a post-2003 Peugeot 807, Citroen C8 or Fiat Ulysse (all the same car, essentially) which have a 5-star NCAP rating and which are within your budget. The diesels are good.