A couple of my brothers used to Scramble in the 60's, Solo & Sidecar and three of us used to Grass Track in the 60's/70's, personally Chairs & Solo. Great sport on old converted road bikes, so very different to todays Moto-X. As BB said, Bath Classic still do Classic Scrambling and if you get the chance, check out Wimborne Clubs Grass Track. Well worth a visit.