Proof reading - Aerial needs spelling correctly in 'Specialists in Digital Aerial Imagery' and in the description of Mavis, available needs spelling correctly in Mavis' video formats, magnesium needs spelling correctly in Irene's shell description, Capability needs spelling correctly in the 'Our Capability' section.
Grammar/continuity - comma needed after industries in the About Us section.
Readability - The whole aircraft section could do with rewriting. There are a number of sentences that don't read properly and appear disjointed. If you are naming the aircraft in this section, maybe consider carrying it on the description, e.g. Mavis is an ultra-portable aircraft. She can be ready to fly within 3 minutes and has a flight time of 27 minutes. She is lightweight and flexible, making her the perfect choice for flying in confined spaces. She offers still photography in JPEG and DNG formats and up to 4K video in MP4 and MOV formats.
Site appearance - Links at top need to be in the centre of the page and ideally should remain at the top of the page whilst scrolling. Gallery is not intuitive. Most people are used to clicking left and right to move between images. If using selection buttons, there needs to be an indication of what picture is currently being viewed. Gallery needs an option to view larger images as the current size does not show the full potential. Contact form needs aligning correctly. Having purchased the gardaltd.co.uk domain, add an email package on and lose the hotmail address.
Sorry if that seems a lot and a bit harsh, but it would be a shame to lose business from the website design.
To end on a positive, the overall design is great. I love the persistent images in the background whilst scrolling and there is no unnecessary waffle.