### Clue: Man purchasing a grand old British company's a charmer (8)
### Answer: MAGICIAN 
 ### Explanation: Definition: a charmer
 MAN **containing**(purchasing) { A + G(abbrev. for a "grand", eg. £1000) + ICI(abbrev. for "Imperial Chemical Industries";once a grand British industrial company – I worked at their Runcorn plant for a while 45 years ago) }.