Rintlekk escape pod
From Tardis Wiki, the free Doctor Who reference
A Rintlekk escape pod was the only surviving piece of a Rintlekk ship that was shot down by UNIT over Wasdale Head, falling into the lake and being salvaged by Dorothy McShane. It was controlled by a semi-semtient Squidget. Dorothy referred to it as 'the Pod' until the Thirteenth Doctor identified it as a Rintlekk Emergency Escape Vessel.
When on a climbing holiday in the Lake District, Sanaul alerted her to a UFO that UNIT was tracking.
It's fuselage was made of dull grey metal, and Dorothy kept it in her workshop, trying to repair it but having no idea of how it worked, or who it was created by.