### Clue: Wise number cruncher? (5)
### Answer: ERNIE 
 ### Explanation: Definition: Wise,number cruncher
 Double defn: 1st: … Wise, the straight man in the comedy duo, Morecambe and Wise; and 2nd: Acronym for Electronic Random Number Indicator Equipment, the random number generator for the lottery based on National Premium Bonds in the UK.**
ERNIE Mk 1, encased in 5 telephone boxes.