Not sure if there is such a thing as a good deal on J Lindeberg stuff. Trendy Golf sells out of the normal sizes pretty quickly. The only other place i know that carries it is Harrods, they have a pretty big collection but it's very easy to walk out with a large chuck of money having dissappeared. I have one of this seasons windproof fleeces (black with purple trim) and it is very warm and comfortable.
The Complete Golfer in Northwood, Middlesex had 20% off all waterproofs last week. Got myself some Galvin Greens at a bargain price.
Funnily enough, their website (completegolfer.co.uk) doesn't reflect the 20% off, only the shop.