Charbroil BBQ replacement burners

Hi,

I have a Charbroil gas bbq which, other than the burners, is in excellent condition. Model: charbroil.co.uk/parts/search/results/?model=140848

I have tried finding the official parts online though without success. The parts I need are these: charbroil.co.uk/tube-burner-uk-g470-4d00-w1

and

charbroil.co.uk/carry-over-tube-uk-g470-2c01-w1

Looks like I'll need to go down an aftermarket route, so would welcome any recommendations for brands, online retailers, or places to buy etc.

Thanks.

Mat