Q: We are arriving at Terminal 5 on a week day during rush hour. As we have a lot of Luggage any suggestions for getting to Victoria/ Pimilico. Thanks Mr. M. A: We can give you the transport options from Heathrow Terminal 5, Starting with the best option for you. With a lot of luggage I would use the dot2dot service http://www.dot2.com/ this is a fixed fee door to door service. A taxi if delayed in traffic may cost considerably more that this. The booking desk is in the middle of T5. turn left when coming out of the arrivals door. Piccadilly line on the underground http://www.tfl.gov.uk/gettingaround/1106.aspx into central London Heathrow express for Paddington or the Heathrow connect service, this in a lot cheaper than Heathrow express but you will need to catch this from Terminal 4.
