On 31 July 1990 several members of C Company drove up Lanark Way, which links the Shankill to the Irish nationalist Springfield Road where they shot and killed 34-year-old John Judge as he stood outside his house.
In July 1992 Thompson was despatched along with McCrory, Tommy Potts and Matthew McCormick as a C Company hit team with the aim of killing Provisional Irish Republican Army commanders Brian Gillen and Martin Lynch in their Andersonstown stronghold.