I like the comments on the facebook page, about not getting refunds for downtime.
On the £29.35 per month (taking a month as 30 days)
30 * 24 = 720 hours
29.35 / 720 = £0.04076 per hour
So if they wanted a refund for 2hr 20mins they would get
£0.04076 * 2.3 = £0.09 (2 d.p.) lol
+ KC admin costs would be a very expensive 9p
Regardless the residential products are provided without a SLA therefore I'd be pretty happy with the 99.99% we are getting over the last 12 months

I have no idea if the business products come with any form of SLA however I doubt any of the cheaper lines do.