Just got back home following a tense period of exams. During the exam period I entered a state know as procrastination-max and spent literally entire days on eBay. Eventually I found a pair of front hubs with the brakes and uprights for a Triumph Vitesse/GT6, though the S4 originally had Herald/Spitfire veritcal links I opted for the GT6 ones due to better performance from the brakes. Here they are now, literally just got home so I'll be working on this for the next week or so and will update accordingly!

Advice greatly appreciated! (unless you're telling me to keep the original Herald brakes - don't tell me that)