Or just wait for breeding season to end. These swans may also migrate during the winter months. They may stay within the UK but move to an area where there is more food during winter and join up with other swans in their winter staging area.
As for his letter to the Queen, although she retains the ownership of all unmarked mute swans in open water, she only exercises her ownership on certain stretches of the Thames and it surrounding tributaries.
Another good point. Just wait until breeding season is over and the swans have moved on.
I have a friend here in the city who has a canadian geese couple come to nest on her balcony year after year. Her neighbors complain to the city constantly about it.
Yet the city refuses to move the geese and they go out of their way to tell people that complain that the mating pair will leave with their goslings in about 6 - 8 weeks so they have to put up with the noise in the meantime.
Apparently the geese are pretty noisy in the morning when they call to each other to relieve each others nest duties. The noise annoys people living next to my friends apartment.
The city says leave nature alone, you are lucky this isn't happening 24 hours a day 7 day a week 365 days a year so shut up and put up with it.
Why these geese come back to her balcony year after year is a mystery to all as the woman has 6 cats that all sit on the windowsill inside her apartment and keep a constant watch out on the breeding pair and the babies.
Its like Live Bird tv for cats.