I bought my twin girls one of those Amazon firestick thingys for each of their TVs in their bedrooms (neither of which have TV aerials) and it is a complete hit!  Between that and the iPlayer etc it all works a treat.  I also have the app on their Ipads and with WiFi, that's another win win situation.  For what, a hundred quid a year?  Happy Days as far as I am concerned.