Hello and Welcome. First I have to credit harriscyclery.com for the photo of the Knarps.
I have been going nuts looking for these knarps. First let me explain. This old Raleigh has a front brake cable with two end pieces. There is no cable anchor point on the caliper to secure the cable. My biggest problem was I had no idea how to describe what I was looking for. In other words I had never even heard the word knarp and certainly had no bloody idea what a knarp was.
Finally I found them on harriscyclery.com And they are made for something else (certain brake levers). However Harris cyclery stocks them for replacement ends for the "two end" front brake cables on some vintage Raleighs (and others). Also, I would like to thank Steve at rebrit.com for his help with some questions I had about this bike. If you are looking for a professionally restored Vintage British bicycle. Steve is the guy you want to get in touch with. Anyway, trying to find a rare part that you don`t know the proper name for is difficult at best. I don`t think I would have attempted this restoration or any bicycle restoration before the internet came along. What a wonderful tool the internet is. Also today I found a 500 watt light stand for the shop. It was on sale locally at Peter`s True Value Hardware for about 14.00 . Now it will be much easier to see what I`m doing in the shop/garage this winter. I am hoping to get some "bicycle work" done this weekend. But I`m ankle deep in leaves, so weather permitting I should get at it. Meantime RIDE SAFE and remember RESCUE-RESTORE & RECYCLE