It is possible that you may also have claims under Regulations 7, 8 and 15.
Regulation 7 provides that an agent should be paid all commissions due to him during the course of the agency.  If your principal has not paid you all commissions due to you up to termination, you would have a claim under Regulation 7.
Regulation 8 provides that you should be paid commissions on all sales made by your principal to your customers and/or in your territory, for a reasonable period after the termination of your agency.  This is often known as pipeline commission.
Regulation 15 – you may have a Regulation 15 claim if you have not been provided with sufficient notice of the termination of your agency.