How much is it likely to cost us to defend such a case?
That depends on the complexity of the case. The cost is most unlikely to be below £2,000-3,000, and may be at least double that figure. Depending on the complexity of the case, and your geographical location, it could be three or even four times as much. Do not forget that costs would not only include the fees to any external advisers, but also the loss of productive activity by company employees involved in defending any claim.