My understanding is that within the first 12 weeks of a strike if you are dismissed it is AUTOMATICALLY regarded as unfair dismissal.
Your recourse is through an Employment Tribunal. The compensation is (I think) similar in calculation to the calculation for statutory redundancy pay.
The maximum is something over £50,000 but the maximum is rarely awarded and the amount is supposed to reflect lost earnings.
An employer can be ordered to reinstate the employee. If the employer refuses to do so one goes back to the ET and a further award can be made again, I believe, with a ceiling of around £50,000 and that is the end of it.
So can you be dismissed for striking? Yes.
Can you be compensated? Yes.
Can you definitely get you job back? Not definitely.
When the pilots last ballotted for strike action during the Ayling disaster BALPA clearly spelt out the risks associated with striking.
BASSA does not appear to wish to do so.