If you go to www.jlindeberg.com, they have an online shop where you can purchase loud and different trousers, if you don't want to pay the delivery charge it lists shops where you can purchase them.
Or if you search on ebay there is premiergolf in Telford, I bid for some trousers and got them for £70 but as the trouser leg size goes up with the waist size, I had to pay £10 to have them turned up.
Despite paying the money the trousers are great, not what I was expecting though.