The 60-year-old musician, who played with the iconic punk band from 1975 to 1977 and was credited as a writer on the majority of the songs on their iconic album Never Mind the B**locks, Here's the Sex Pistols, posted an appeal on Facebook on Saturday (10Dec16) for information leading to their return.
"The following 3 guitars have recently been stolen from near my London W9 (postcode) home," he wrote, listing a 1961 Ivory Fender Precision Bass guitar, a Modern Mexican Black Precision Bass with a tortoise shell pick guard and a Blonde Guild D37 Acoustic guitar (sic) as the instruments stolen.
Describing them as being stored in soft rather than hard guitar cases, he added, "Please keep an eye out for them. A substantial reward will be paid for information leading to their recovery. Many thanks, Glen."
Although he was a major contributor to the Sex Pistols first album he had left the band to found the Rich Kids by the time it hit the charts and was replaced by Sid Vicious.
However with Vicious passing away in 1979 after overdosing on heroin, since 1996 Matlock has returned to performing and has played with the Sex Pistols at sporadic reunions.