I had slow speeds to start with which they were'nt very forthcoming with in their support. In the end I moved away from them because they are quite overpriced compared to other providers that offer an almost identical service. I was stung with a cease fee which I wasn't aware of and wasn't made clear at the time I ordered my broadband. Your mileage may vary but I wouldn't recommend them or go back to them myself.
Update 13/10/20 - Uno, I appreciate the comments but the last issue was nothing to do with replacing the filter - in fact, the cause of the issues was never determined as it seemed to resolve itself in the end. I worked very closely with your support representative, providing lots of data and evidence supporting the idea that it wasn't something saturating the bandwidth on my LAN.
Secondly, the sync speed may well have been within range but obtaining throughput at those speeds is a different story. The connection was so slow at one point, I couldn't navigate to your own website to update the support case.
Speeds at our location will never be very fast, I appreciate that, but Uno failed to deliver a service that goes above and beyond that which I can get from Zen Internet for about £15 less per month.
Time With Provider: 18 Months
Package Name: Fibre Pro 12 months