Flying object identification please

[newswatcher]

Anyone know what the object was flying over Basingstoke, at about 5pm today(08/04)? It was travelling in an east-west direction. It looked like a very long black "sausage", which glinted in the sun. Travelling reasonably fast, went out of sight within about 20 minutes. Height? Possibly about 5k feet plus.

[chevvron]

Plenty of aircraft over Basingstoke at that time including a helicopter doing pleasure flying; nobody reported anything unusual.

[newswatcher]

Defintely not a helicopter, some form of inflatable. When I say "reasonably fast", this means for an inflatable-type!