The Daimler Sovereign was introduced at the October 1966 London Motor Show and produced for two years as the ultimate expression of a series of “compact sporting saloons” offered by Daimler throughout that decade, all of which shared the same wheelbase. Developed from the Jaguar S-Type, the Soveriegn cost around £200 more than that model and effectively ended buyer interest in it, although the S-Type continued to be sold alongside the 420/Sovereign until both were supplanted by the Jaguar XJ6 late in 1968. Changes to the S-Type’s interior to create the Sovereign were driven mainly by safety considerations, with the wood cappings on the doors and dashboard replaced with padded Rexine and a wooden garnish rail on the tops of the door linings.
The 4.2-litre XK engine of the Sovereign was fitted with the straight port cylinder head and 3/8-inch lift cams. Compression ratios of 7:1, 8:1 and 9:1 could be specified according to local fuel quality, the difference being obtained by varying the crown design of the pistons. The engine was fed by just two carburettors and developed a claimed 245 bhp gross at 5,500 rpm, which was 20 bhp less than the triple-carburettor version in the 420G and E-Type. The maximum torque of the engine at 283 lb·ft was virtually the same as that of the triple-carburettor version yet was achieved at 3,750 rpm rather than 4,000 rpm.
This great looking S-Type comes in an unusual green/ red combination. After standing for what is believed to be two decades, the car enjoyed a comprehensive restoration in 2013 including upgraded suspension and an engine rebuild. The interior could do with some work but mechanically the car is said to be sound and it drives well.