Yes.
For a start, I assume that the date for issue of the drawings was either in the Works Information &/or the Accepted Programme. That would be a compensation event under clause 60.1 (5).
You could also argue that the PM is changing the Works Information. That would be c compensation event under 60.1 (1).
Finally look at option B clause 60.4, for a reduction in quantities. While its application would mean that you receive less overall, it may well entitle you to a re-rat to recover the overheads included in your original rate.
For a start, I assume that the date for issue of the drawings was either in the Works Information &/or the Accepted Programme. That would be a compensation event under clause 60.1 (5).
You could also argue that the PM is changing the Works Information. That would be c compensation event under 60.1 (1).
Finally look at option B clause 60.4, for a reduction in quantities. While its application would mean that you receive less overall, it may well entitle you to a re-rat to recover the overheads included in your original rate.