Lenticular clouds? - NOT amateur radio

Returning home a few hours ago I spotted what seemed to be lenticular clouds below the normal rain clouds. Lenticular clouds are usually associated with mountains.

In the past I have seen them (Yorkshire Dales and Portugal), but never around here where even small hills are rare!

The photo I took hardly did justice to what I saw. If not lenticular clouds, they looked very similar. I am no cloud expert, so am happy to be told what they were. Weather was about 7 degrees C and dry.