Acidanthera problems

When I first "re-discovered" gardening I bought some Acidanthera corms and got great results! Year after year too.
Then I moved and the blooming of this plant was a thing of the past
On the face of it everything is the same - both gardens face south, plenty of sun etc. So what am I doing wrong? Is there a trick to blooming them?
I've just bought some corms again, this time from Lidl (£1.29 for 25). To be fair they are the nicest looking (plump and smooth) corms that I have seen in years.
As I will not be in the new house for another six weeks they will have to go into pots now, or would I be better off waiting?

Help me please - it's getting embarrassing!