Our unpredictable summer weather hit a crescendo when these strange-looking clouds appeared in the skies over Luton on Tuesday, August 16.

LutonToday reader Pasquale Failla, of Baker Street, snapped the phenomenon and emailed in his pictures, wondering if our newsdesk could help him identify the formation.

He said: "The group of clouds covering south Luton, heading north eastwards over the airport, were like bubbles. While at work yesterday my colleague asked if anyone else had seen the unusual clouds the night before, and I explained that I did, and others did too.

"I'm sure hundreds in Luton must have seen them - they were most definitely the strangest clouds I have ever seen in my lifetime."

Mr Failla's photograph was forwarded to weather experts at the Met Office, who were able to quickly identify what he had seen.

Met Office spokesman John Hammond said: "The image shows a great example of a specific cloud called 'mammatus'. It hangs like udders from the base of other clouds, including stratocumulus, altocumulus and cumulonimbus.

"They are usually caused by down draughts within heavy showers and thunderstorms."

Did you take any photographs of the mammatus clouds? Email our newsdesk at editorial@bedsnews.com