In other words, they don't believe Rossi either, on the evidence that he's provided.
I personally think their position is way too cover-their-a***/////////// conservative.
They don't even include a more public 1MW acceptance test as a possible trigger.
I think I reported on an MBA thesis recently, on what government response is appropriate, ranging from (my scale, as I recall it)
0 deny its existence
1 watch progress
...
9 urgent program
10 national crash program
On that scale, DECC's position is 0.5