There is provided a data processing apparatus in which receive circuitry receives a result signal from a lower level cache and a higher level cache in respect of a first instruction block. The lower level cache and the higher level cache are arranged hierarchically and transmit circuitry transmits, to the higher level cache, a query for the result signal. In response to the result signal originating from the higher level cache containing requested data, the transmit circuitry transmits a further query to the higher level cache for a subsequent instruction block at an earlier time than the further query is transmitted to the higher level cache when the result signal containing the requested data originates from the lower level cache.