So why we're women removed from the workplace to make way for the returning men?
As usual, you are a little confused over the facts. Let me explain it to you.
In the 40s, immediately after the war, the country was bankrupt and on its knees. So, yes, there was a shortage of work for men.
But by the 50s, the situation had changed, and The UK economy was taking off. This was the period that you originally referred to.
So, with the renewed growth, due to the fact that hundreds of thousands were unavailable to take advantage of this due to being killed or disabled in WW2, we needed extra workers. Thats why thousands of immigrants were shipped in.