求助法律專家: How to sue a company?

求助法律專家:

How to sue a company, in the course of carrying on a regulated activity in contravention of the general prohibition, under Section 26 of FSMA, to get back the money I paid under the agreement and compensation for any loss I sustained.

How to sue the Financial Service Authority for regulatory breakdown?

這家公司已經搬家，信無法寄到，我想直接起訴這家公司先把文件遞上去（一旦這家公司宣布破產我投資的錢就拿不回來了），同時想告 the FSA 瀆職。想自己按照程序走不想找律師。

請那位清楚金融投資方麵法規的大俠幫助，謝謝先。