its not a big deal.
Call farnbourough n on 132.8 on departure from WW. Before the 1500' zone call NW , descend to be under 1500 and squawk 7010 . Join dw. I've never called stanstead.
The only issue I ever have is with the 02/20 runways. The most confusing names. They would be better off calling them 01/19 or 03/21 even if it is wrong. It would save lots of issues with people flying the wrong way.
Other than that enjoy it. Lots of good stuff happens there.