NB: I hold a Natural England licence for this species.
This summer I think many of us have felt like this! Dormice go into torpor to conserve energy when the weather is bad and so far this year while monitoring I haven't found one awake - not that I find many in my boxes anywaY.
Incidentally they never actually sleep in this position but are usually on their side - more photogenic this way.
Taken on the Malvern Hills.