Thoughts please

New battery fitted and re tested
Alternator fine
No interior lights left on
5 breakdown cal. Outs to flat battery
Something draining and I can't work it out
Ford agent has run tests to see if there is any drain showing up.... Nothing

Car left over Christmas day Wouldn't start boxing day
Push button activated but no dash lights or Anyhting

Please help

 

Does your vehicle require a security device to be in the vehicle in order for it to start?
Is your vehicle at home parked near another vehicle that also requires a security device in order to start?
If it does use a device , has anyone checked the battery in that device?

In some late model vehicles when the battery is disconnected /replaced , the charging system needs to be reprogrammed to "know" a change has been made or it will not maintain the battery at peak level.
Can you bring us up to date on whatever maintenance was performed prior to the beginning of the problem?