However, the law allows strikers to seek reinstatement or compensation
Joao, you can forget reinstatement as an option. A tribunal cannot enforce reinstatement and indeed rarely orders it as a result. In the rare case that such an order is made (7 times during 2008/9) the employer can simply ignore it opting for an increased financial penalty as a result.
All topical stuff actually as I was listening to a bunch of employers moaning on the radio this morning about the fact that it's all to far over in the employees favour - I really dont see it like that, if you lose your job thats it, you are out of work, end off. At best perhaps you might get £5k-£10K as a result in most cases.