1) It would be a standard civil litigation solicitor. You can find one here:
2) You could consider a injunction preventing contact. But there would have to be a course of conduct, that is harassment on more than 1 occasion.
You would need to complete forms N208:
The Court would set the matter down and decide whether to make an order preventing contact directly/indirectly, save through a Solicitor.
If the Court makes an order and it is breached, this could be contempt of Court and they could be warned, fined or sent to prison
Can I clarify anything for you about this today please?