There is a Cirrus dealer in the UK - I spoke to him at N Weald show last year - whether he will pass on the favourable $ exchange rate is another matter.
Check you can G-reg a Cirrus - last time I heard, the parachute prevented this so it had to be N-reg. Practically, this means you have to get FAA licenses/ratings to get full use from it.
Also it comes without an ADF and DME; practically this makes it useless for any real UK/European flying (especially for a decent touring aircraft like this) so these have to be fitted as extras.
Check the EXACT warranty arrangements, e.g. where you have to take it for which types of work. Cirrus are not common in the UK and this can be a major issue.
Other than that, and without personal experience, it seems a great plane. It is the future, and its success in the USA assures that you will get good support in the future (in the USA, anyway). I am not keen on the 2500RPM fixed cruise setting; this is likely to show up as extra 10% or so on fuel flow, but the thing is pretty slippery to start with... I fly a TB20GT and you should look at that too; arguably it is a better choice (for performance as well as the more practical reasons such as getting people to work on it) than an SR20/22 for UK/Europe.