Afterward, when you are already in Warsaw, you would have an opportunity to see how different the 2nd World War looked in this part of Europe. Such “double” travel during one holiday might be a great way to discover this complex history! Because of the fact, that currently there are many flights from London to Warsaw, it would be easy to find flights for most convenient date and time . As a result of this, such trip will be quite easy to organize.
Other idea for different holiday is to go to Stockholm with purpose to attend as plenty of festival as cultural festivals as possible. During the summer there are many events like this in Stockholm! There are big as well as already famous events (as for example Stockholm Culture Festival), but also many small, less famous events in various parks and even on the street! It is easy to find info about them online, so finding them should be easy too (click and learn more). Moreover, there are tons of cheap flights Stockholm, so such trip can be really affordable and does not have to ruin your budget, even if your budget is very small.