No Returnsies

At some time around the mid 19th Century, British explorers discovered the Easter Islands and being mightily impressed by the big headed statues standing on the Island, decided to load a few of them onto their ship and bring them back to Blightly hoping nobody would see the massive head shaped holes on the Island.
Seems the Governor there has now noticed and is asking for them back but the British Museum has said they can 'loan' them but we want them back again because the people who stole them gave them to Queen Victoria so they are actually hers now but us British are not very good at giving back things which we have taken without the owners permission.
In recent years we have received requests to return the Rosetta Stone to Egypt, the Parthenon Marbles to Greece, Benin bronze sculptures to Nigeria and the Koh-i-noor diamond to India and told them all to go do one, no returnsies.
The argument is that if we start returning artifacts looted during the colonial era, we will open the door for all sorts of claim making and that could prove very uncomfortable as us Brits do hang on to a lot of things we forcibly removed from other lands and cultures and in some cases we left it there and just took the land.
Another argument those against repatriation frequently use is that indigenous people offered the cultural objects to the invading Brits although the fact that it was probably in exchange for not having a bayonet rammed through their skulls seems to be overlooked.
After 200 years of massacring, pillaging and plundering the World, handing back the things we 'acquired' should be the very least we can do to say sorry.