Against this potential liability, you think it possible that Healcase probably caused one weeks’ critical delay to the project as a whole. This would have cost you £30,000 plus any liability for client damages. However, you are in a difficult situation here as you are claiming the client/developer is responsible for all delay and in any event you think it would be far too costly to prove your counterclaim case against Healcase.
You are hoping that Healcase will feel a little vulnerable here and that you can use it as a negotiating tool.
You realise that Healcase would never agree to your £60,000 figure in the first place and might make a token gesture towards your extra site admin costs. Bottom line is that you reckon you will be very lucky to get them to agree to a walk away with £60,000.