You can order these from Xline website as they sell all the spare parts and accessories. Photo 7 and 8 show the complete pole, and photos 10 and 11 show the pole that is missing the clip, so you see clearly.
As mentioned, cash when you collect from Colchester please. This item is in the category "Home, Furniture & DIY\Household & Laundry Supplies\Cleaning Tools\Squeegees & Window Cleaning". The seller is "reeeve2020" and is located in this country: GB.
This item can be shipped to United Kingdom.