Firstly, safe journey to those coming down this weekend.
Next up......Transport for Londons efforts to make your journey a nightmare if you dare to use public transport.
[url=http://www.tfl.gov.uk/tfl/livetravelnews/realtime/by-date.aspx?offset=weekendHERE[/url are the reported underground engineering works planned for the weekend.
So, if you are coming down by train to Kings Cross, then the best route to Twickenham will be the Victoria Line to Vauxhal then the train to Twickenham.
Note, if you were going to use the overground line that runs from Stratford to Richmond....you can't as it's being readied for 2012
Anyway, happy travels!