The SiliconDust (SD) DVR kickstarter is still open for new users. A lot of users in US started with the SD program and then transferred to Channels (prior to the split).
They are the manufacturers of the tuners you are using and started a DVR project over a year ago. They do have UK users, however many are dissatified due to problems with EPG supplier. This could be a show stopper for you.
Cost is 60usd. Please review their forum on software development for their solution. They are primarily working on Android TV, Windows 10 and now have a native MAC solution. Thay are leaving iOS to third party developers, like Channels and InstaTV (? If in UK).
Some started with the SD solution prior to Channels. Others joined SD just to utilize Channels. I joined 2 weeks before the split, and was very unhappy when the split occurred, but I adjusted.
The SD recording engine is reliable, however, no traditional guide (due to licensing) and the playback capabilities are atrocious. There are some anomalies in their design protocol, but most can be circumvented. It’s definitely not Channels but you can utilize all of the hardware which you’ve invested in.
See the suggestions here in the (Channels) SD DVR Support thread for utilizing other third party players for recording playback and possible scheduling devices. Lots of users in the SD camp are using Android/Windows 10 (mobile or desktop).
Terrible blow for all of you to be delayed so long for Channels, but there are alternatives.