12.2 You hereby irrevocably and unconditionally waive all rights granted by Chapter IV of Part I of the Copyright, Designs and Patents Act 1988 that vest in you (whether before, on or after the date hereof) in connection with your authorship of any copyright works in the course of your employment with the Company, wherever in the world enforceable, including without limitation the right to be identified as the author of any such works and the right not to have any such works subjected to derogatory treatment.
12.3 You and the Company acknowledge the provisions of Sections 39 to 42 of the Patents Act 1977 ("the Act") relating to the ownership of employees’ inventions and the compensation of employees for certain inventions respectively. If you make any inventions that do not belong to the Company under the Act, you agree that you will forthwith license or assign (as determined by the Company) to the Company your rights in relation to such inventions and will deliver to the Company all documents and other materials relating to them. The Company will pay to you such compensation for the licence or assignment as the Company will determine in its absolute discretion, subject to Section 40 of the Act.

A section in a contract I had to sign as a sub-sub contractor for some work we are doing for a third party, It looks to me completly unenforcaable.