I was travelling from Hammersmith towards central london on the H+C. Before the train reached Goldhawk Rd, we were told the train would terminate at Edgware Rd and reverse to Bayswater. I thought that I should get off and wait for the next train for two reasons - at Edgware Rd the next train (probably coming from hammersmith) would be already full. Also I don't know which platform the train would go into - p 2 or p3. I may not get the cross-platform interchange. What is the idea of this maneouvre? I'm thinking it is to help out with gaps on the inner rail service??