Parblazer (1977 - )
Initially for 120V lamps (two Parblazers must be used in series on a 240V supply).
Parblazer was introduced in March 1977 at a retail price of £27 + VAT = £30.37 (12.5% VAT). This equates to £183 in 2018 money.
The Parblazer 2 was introduced in September 1978, once 240V lamps had become available.
The Parblazer 4 debuted in 1981.