Question: I am writing the figure of £1,000,000 in a presentation but finding that my style guide clashes with what looks right.

* 'Million' must be spelled out.
* '£' must be used instead of 'pounds'.
* Numbers one to ten must be written out and not expressed in numerals.

As such, it appears that I should present *£1,000,000* as *£one million* but this looks so odd. Any suggestions?

Answer: 
I have worked for a number of UK academic publishers and they all have'£1 million' (with lowercase m) as their house style. Occasionally, I have seen 1 million GBP. Incidentally, most publishers prefer numbers up to ten (or twenty) to be spelled out. This rule is usually 'bent' if it would create sentences such as: ' ... between eight and 12 people'. The guiding principle is to avoid cluttering the page with numerals whilst making sure that readers don't have to wade through too many spelled-out numbers. It's all to do with ease of reading as well as consistency.
I think in this case £1 million would be the correct form.