Hi
You can see a list of UK stockists if you go onto www.kiddy.uk.com and click on the top right button for Nearest Stockists. John Lewis stock the Comfort Pro and the Guardian Pro both group 1,2,3s and I know that it is not discounted anywhere in the UK so what you pay in one shop is going to be the same as in another anywhere. It won't be any cheaper ordering direct from Germany anyway as you will pay the same UK RRP and in fact the carriage costs wil be more. In fact I am certain they will not sell direct to you from Germany. There are over 100 UK stores now selling Kiddy over here.
The impact shield is safer overall than the 5 point harness in Group 1 and Group 1,2,3 seats. The Rear Facing seats are only safer in front crashes which are required by European law. Most impacts, bumps and scrapes (about 70%) are from the side with mums driving and so the Kiddy Infinity Pro and Kiddy Guardian Pro has been proven to be the safest design in side impact protection in major international tests including crash tests which are not carried out by magazine tests. 'Which' did compare these two Kiddy seats in 2009 and this year with all other major european brands, and in Group 1 and group 1,2,3 Kiddy came out top. The new kiddy Energy Pro (group 1) has also shown similar results in major tests in Europe not yet published over here.
As for fitting, the impact shield should not be pushed tight against the child. It should 'nestle' gently and comfoirtably against the tummy and you use the adult seatbelt to secure it in position. It has special slits to keep it in place. Kiddy puts safety first, then comfort of the child and then ease of use for mums and dads - and all their car seats live up to their very high standards of quality.
It is a different system to the 5 point harness but what you get in return is beter safety, a child that has more freedom in the upper body and a car seat that is very easy to fit correctly without hurting your back!
Go for it. They are so practical and so easy to use, you won't ever want a heavy car seat again!