Frankly, one could argue that, for both quality & quantity, England surpasses both Ireland & Scotland.
DT
And for variety. You could scream it from the rooftops, but the masses still wouldn't listen.
From a south London base, you have Royal St George's, Royal Cinque Ports, Littlestone, Rye, Sunningdale (x2), Berkshire (x2), Wentworth (x2), Woburn (x3), Swinley Forest, Huntercombe, Woking, West Hill, Worplesdon, New Zealand, St George's Hill, Walton Heath (x2), The Addington, West Sussex, Royal Ashdown Forest, Hankley Common etc etc at your disposal within a 80-90min drive (and most of them within 30min) on comfortable motorways.
Drive two hours west for a few days' R&R after that feast and you have Burnham & Berrow, Royal Porthcawl, Pennard, Royal North Devon, Saunton (x2) and St Enodoc within easy reach...
But far be it for me to dissuade the masses from spending a 7-10 day visit driving the length and bredth of Scotland or Ireland on narrow roads to get their kicks.