kholangas burner kza 003 required?

Gas Fire Make/Model: Kholangas Karizma GC No. 32 435 19

Do you know where I can obtain the following please:
a new Kholangas Burner - part No. KZA 003 (Gas Council No. 144 226)
and a new Kholangas Thermocouple - part No. KMN 035 (Gas Council No. 381 713)
Also the prices please if available. Thanks