I think one of the best experiences so far is the high number of scientific presentations each week. Working at a world-wide renowned cancer centre provides you the opportunity to listen to talks of top-level (internal and external) scientists which is extremely motivating. Not only the info about cutting-edge technologies but also the ways of thinking presented are useful for young researchers. Sometimes it's really hard to decide which talk I should opt for. If you are planning your future in the biomedicine, I can highly recommend London as working place since this vivid scientific life makes you really obsessed.