My old job at the Health & Safety Laboratory is being advertised, and at a higher pay grade to boot. (Though it is still civil service pay, and thus not going to make you rich.)
You’ll need to have solid mathematical modelling skills, particularly solving systems of ODEs, and be proficient at writing scientific code, preferably R or MATLAB or acslX. From chats with a few people at the lab, management are especially keen to get someone who can bring in money so grant writing and blagging skills are important too.
It’s a smashing place to work and the people are lovely. Also, you get flexitime and loads of holiday. If you are looking for a maths job in North West* England then I can heartily recommend applying.
*Buxton is sometimes North West England (when we get BBC local news) and sometimes in the East Midlands (like when we vote in European elections).