ourdave:
Not that fussed about defending the deal - but I'd rather go to Halfords and get it installed than order it from Kiddicare.com, who I've never heard of.
I've been debating whether to get another Si for about 9 months now - another baby coming through and it'll save on moving the 'old' one from car to car - and I've seen it for £100+ in loads of places, so it's not just Halfords doing silly prices.
I've used Kiddicare (and been into the store) and they are great. To be honest I wouldn't trust Halfords to fit a car seat. The last time we went there they fitted a Britax one and said it was fine, when I had a look there was buckle-crunch and you could push the seat over with very little effort!!!!