We drove further towards it, but low level clouds were blocking everything out, and it appeared to be an early trip home. However, we persevered and things turned out ok. There was a nice updraft on the cell on the left, you can see the underneath of the anvil spreading out here.

Here's another one a little later. The anvil is spreading out quite quickly along with the winds.

Here's a nice solid looking updraft.

And a close up of some mammatus.

Another single cell with an anvil blowing along.

More solid looking cumulus in it's early stages.

And another cell......

And another one! They were obviously everywhere we looked, and being April the temps were down leaving little moisture and therefore photogenic cells everywhere!

You can see more forming behind us here. But by now we'd driven 80 odd miles so it was time to head home. We didn't see any lightning, or any suspicious lowerings etc, but it was a good chase.