Summary:
Replacing the cable to the shed is not notifiable.
Replacing the consumer unit with another or with something else may or may not be, depending upon how one interprets the ambiguous rules, and depending upon whether you create any new circuits in the shed in the process. Trying to decide whether you have done the latter could also be difficult.
Presumably as you work in industrial/commercial settings you'll be doing everything to a perfectly safe standard, testing, and probably supplying a certificate.
Ultimately notification falls on the homeowner, so you needn't worry about that.
To the best of our knowledge, not one single case has ever been brought against somebody just for failing to notify a job; it's always involved sub-standard, dangerous work.
Depending upon the local authority involved, notification could cost anything from about £100 up to £400 or more, not to mention getting involved with the usual council red-tape.
Suggestion:
Explain the situation to the homeowner and let him decide whether he wants to bother with notification or not.
Go ahead and do a safe job and get paid.
Result:
Home owner is happy, you're happy!
Replacing the cable to the shed is not notifiable.
Replacing the consumer unit with another or with something else may or may not be, depending upon how one interprets the ambiguous rules, and depending upon whether you create any new circuits in the shed in the process. Trying to decide whether you have done the latter could also be difficult.
Presumably as you work in industrial/commercial settings you'll be doing everything to a perfectly safe standard, testing, and probably supplying a certificate.
Ultimately notification falls on the homeowner, so you needn't worry about that.
To the best of our knowledge, not one single case has ever been brought against somebody just for failing to notify a job; it's always involved sub-standard, dangerous work.
Depending upon the local authority involved, notification could cost anything from about £100 up to £400 or more, not to mention getting involved with the usual council red-tape.
Suggestion:
Explain the situation to the homeowner and let him decide whether he wants to bother with notification or not.
Go ahead and do a safe job and get paid.
Result:
Home owner is happy, you're happy!