Excellent site !
Just a few minor issues with presentation of spelling and scan: (but these are only suggestions based on the fact that I'm old so please don't take offence)
Erith, Kent not Erith Kent as the latter sounds like a province of The Netherlands.
Have you got (green algae blocking the natural sun light from your conservatory). My English teacher taught us that 'got' was a word, along with many others, that doesn't sound business like with alternatives being sourced whenever possible. He always suggested an approach like; Do you have....
Likewise blocked is good but obscured sounds more professional.
These are very minor criticisms as the site looks extremely good, I like the pictures, the slides, colour scheme and the fonts.
Very nice.