I might expand my descriptions, but definitelly not the title tags. title/h1 tags are the most important tags on the page and I always keep them as concise as possible. Optimizing a page well for several pages just makes it a weaker match for all the phrases. I always keep one phrase per page, 3/4 word titles only. Also, people searching for the company name already find me. I choose not to waste precious title/h1 emphasis on words that are not worth optimizing...

Let me explain: there is a 65 character allowance for the title, but the keyword density is measured in terms of word. Example:
1. web design london
the word london has 33% prominence and 33% density

2. web design london | fyneworks web design services
the word london is now less prominence and occupies under 15% density

Do you think that sounds ok? I will only stick to something if I can't see a problem with it - but please, if you see one, let me know...