Thanks,
I found the solution to my problem.

Because I only have a modestly sized pond I didn't want the area cluttered with more equipment than there is pond.

Today I bought and installed a Hozelock Easyclear 2000, an all in one filter, pump & fountain, ideal for what I wanted.

Recommended price is somewhere around £160.00 but I paid £72.95 via ebay with Kettering Koi & Ponds and drove the 10 miles e/w to Kettering to collect and pay for it earlier today.

Thanks