anybody know how much customs import duty i would pay on a 100 quid tft screen from hong kong?

You'll pay 17.5% VAT on top of the item price plus postage and insurance, and then you'll pay import duty on top of all that - which is between 4 and 8% IIRC, depending on what the item is classified as by the HCME people (I can't remember what tech goods are though, sorry). Then there'll probably be a 'clearing charge' by the courier as well, for processing the paperwork - usually between £10 and £20 (depends on the courier)

 

So if, for the sake of argument, postage & insurance is £50, you'd pay:

 

VAT = 150 * 17.5% = £26.25

Duty = 176.25 * 6% = £10.58

Clearing = 186.83 + 15 = £201.83

 

Adds up quick doesn't it..

 

It does depend on who exactly looks at your package, though.. you could get lucky..