BT Infinity has dropped down to 32Mbps download / 8Mbps upload, but it’s not disconnected now for about 4 days.  I assume therefore it’s been settling to a speed the line quality can handle, and has landed at pretty close to the original BT estimate (34Mbps / 10Mbps).

I’m still happy with that speed, and I’m glad the line has stabilised and stopped disconnecting once a day!