Complex sentence: Turning his attention once more to housing, he became Vice Chairman of the GLC's Housing Management Committee, however was sacked in April 1975 for his vocal opposition to the Goodwin administration's decision to cut £50,000,000 from the GLC's house-building budget.
Split into simpler sentences: Turning his attention once more to housing, he rose to the position of Vice Chairman of the GLC's Housing Management Committee. However, in April 1975 he was sacked from this position for his vocal opposition to the Goodwin administration's decision to cut £50,000,000 from the GLC's house-building budget.