Simplybook
Just visited Bimble and the guys there explained and sorted my ancient motorhome's solar arrangement and saved me money in the process - they could have taken much more off me but didn't, and that's priceless! Highly recommended.
Google
They had what I needed at a reasonable price, and although the delivery was delayed by one day due to unforseen circumstances, the delivery company called to let me know as soon as they could.