If you ordered through avi-8.com:

All orders placed on our AVI-8.COM website are shipped from either our warehouse located in the US or in Hong Kong depending on the availability of stock. These are shipped out via Express Mail and would normally take 3-5 business days or up to 7 business days (not including weekends and public holidays) to be received. 

If you ordered through avi-8.co.uk:

All orders placed on our AVI-8.CO.UK are shipped from either our warehouse located in the UK or in Hong Kong depending on the availability of stock. These are shipped our via Express Mail and would normally take 3-5 business days or up to 7 business days (not including weekends and public holidays) to be received.