Buying from AliExpress

I nearly clicked on the spend button on AliExpress yesterday, but I backed out when entering the address.
In the field for city, the drop down had counties and there was other place to enter the town name, other than implicitly via the post code.

Have any other Mansion denizens based in the UK experienced problem with AliExpress and are there any horror stories regarding delivery, customs or import duty?

TIA.