My wife will be doing an 4-week English course in London in January, and she has the option to study in the morning or in the afternoon.
Considering open hours and the season (January 2015), is it better to have free time in the morning or in the afternoon to see attractions and wander around the city?
EDIT: My concern in this question is about how much time will be left to see attractions in London, e.g., Westminster Abbey seems to be open mostly in the morning and early afternoon, so having morning free time would be better for that. My question is about general open hours in London.
PS: The afternoon course is about 250 GBP cheaper than the morning one for 4 weeks.