The fact of the matter is Tesco is too top heavy to be effective at operating efficiently, making cuts to the bottom line is the last thing they should be doing, in real management terms, in a workforce of 100,000 employees there should be 11,111 managers, a roughly 1/10 ratio with the additional 1,111 to manage the 10,000 managers. The thing with that is, the more you take from the productive bottom line, the less justification there will be to have as many managers.
Management is the least efficient activity in an organization and one of the most costly, for a business to run like a well oiled machine, any future cuts should be aimed at management.