"You will be eligible for sick pay in accordance with the Company's Sick Pay Scheme, as detailed in Appendix 2 of this Statement of Main Terms and Conditions of Employment. This does not affect the right of the Company to terminate your contract prior to the expiry of the maximum sick pay period.
"Entitlement to Company Sick Pay will normally cease at the end of the appropriate period reached above. In exceptional circumstances, an extension to the entitlement may be granted at management's discretion.
"Finally, I was disappointed to see that you were part of the ASLEF strike picket at White City on June 27, given that you are at the present time on sick leave. In my view, I feel that if you are fit to do this, then you are fit to be at work. As a result, you will not receive company sick pay from June 27 1996; you will receive statutory sick pay only, until further notice."
"(1) An employer shall not make a deduction from wages of a worker employed by him unless- (a) the deduction is required or authorised to be made by virtue of a statutory provision or a relevant provision of a worker's contract, or (b) the worker has previously signified in writing his agreement or consent to the making of the deduction.
"If a man, who is entitled to reject goods on a certain ground, so conducts himself as to lead the other to believe that he is not relying on that ground, then he cannot afterwards set it up as a ground of rejection, when it would be unfair or unjust to allow him to do so."
"10 ... he [ Mr Daintree ] took an arbitrary and uninformed decision as to whether Mr Jaeger's conduct in attending the picket line had prevented his returning to health and therefore his return to work."