Concatenate IF Cell Is Not Empty

I have been sent a very large file of product data from one of my suppliers, They sent all of the details in separate fields (for example, colour, height, width, depth, material etc)

I have processed all these columns to appear how I want them, but now need to join them together so they can all be added to my main description. I want each one to be on a new line when it's displayed on my website, so I'll be adding a <br /> tag (break tag) after each item. This I can do no problem.

This would all be fine, if all the columns contained data, but a lot of the time the columns do not contain data (eg. I have a column for "knife length" but not all of my products are knives, so not all of them require this information"

for example, I have something like:

SKU | Colour | height | width | depth | material
ABC | blue | 50mm | 10mm | 60mm |
BCD | | 80mm | 75mm | 30mm | wood
CDE | red | | | | plastic

I could use something like :

=CONCATENATE($A2, " <br /> ", CHAR(10),$B2, " <br /> ", CHAR(10),$C2, " <br /> ", CHAR(10),)

This however means writing a piece of code for each cell I want to join, My cells go from range "O2" to "DW2", I don't fancy writing that for every single column!! Also, it means that If I have some empty fields, it will still add a break tag, this will look very odd on my site.

I really need a way of writing into the function "include if cell contains data" for each cell. If it doesn't contain anything, skip it and move to the next. (the char(10) in this just gives me a line break in excel so I can see what it'll look like when it's exported)