Complex sentence: Only one test missile silo was built in the UK at RAF Spadeadam and with the cancellation of the Blue Streak project in 1960 the UK ICBM nuclear missile capability was transferred to submarines.
Split into simpler sentences: Only one test missile silo was built in the UK at RAF Spadeadam and with the cancellation of the Blue Streak project. In 1960 the UK ICBM nuclear missile capability was transferred to submarines.