I have got tesco clubcard vouchers for a city cruise on the Thames, can either use for the circular 45 min tour or the red rover hop on/ off ticket. I also have clubcard vouchers for the Tower of London so need to include that. We only have 1 day to do sightseeing with 2 teenagers. I've spent hours googling and other places of interest are South Bank, Camden Market, Covent Garden, Leake Street graffiti tunnel,Picadilly circus, Tardis police box at Earl's Court tube station. I know we won't be able to do all of these things but can someone that knows the area try and fit as many in to one day as possible & tell me what order to do things?