Hi Chris,
Don't know about the costs, some shipping is free depending upon the size of the order.
The company is based in Larne, N Ireland which is why I use them, send some money to the home country.  My kits usually arrive in England within 2/3 days.
That aside the chap who runs it is called Mike you can e-mail him at 
[email protected] and I'm sure he could tell you how much it might cost.
I've had nothing but excellent service from them which is all I can say.
Hope this helps.
Al
later;  PS Don't forget you won't have to pay UK tax on these items so this might help off set the cost of shipping