Hi Matt,
Thanks for your reply 
I have had a look into this for you and I can confirm that when I check the box remotely all signal and power levels are working fine right now. The only issue that we can detect is the high demand issue that has already been escalated and our network engineers are working to alleviate the high demand problems currently present.
I have looked into the high demand fault raised a little further and looking at the times that you're being impacted, it is mainly evenings from around 4-5pm onwards right through to around midnight, but there are times earlier in the afternoon where the high demand is higher than normal.
High demand does mainly occur during peaks times but the services can be affected to different levels at different times. It will tend to be worse in the evenings, this doesn't mean that anyone affected by this will be symptom free during the day entirely.
The latest update is that we will hope to have this resolved as soon as possible, this will be reviewed on 17 AUG 2016, if by then things haven't improved, we welcome you to pop back to us and request an update and we'll be happy to help check this further. Due to the nature of the work required we're unable to guarantee that this will be fixed by this time. The reference number for this is: F003669643.
In regards to credit for the disruption, the BBC iPlayer is a free App available to all via various devices so we wouldn't credit for this facility if it's disrupted.
I am sorry for the disruption caused during this time. We will work hard to get this resolved as soon as we can.
Thank you for your patience.
Collette 
Tech fan? Have you read our Digital life blog yet? Check it out