in that case you should get it eventually, but you WILL pay VAT and a handling charge and expect customs to hold onto it for a while. Probably cheaper to get it in the UK unless it's on special offer.
I've imported around 20 guns since 2007 WITHOUT a UKARA number, and generally not had too much of an issue. Have mostly used TNT who seem to be on the ball. Just ensure you have a defense with adequate paperwork etc.
