In theory that's what the House of Lords is for. The top science/medical/legal/etc bods are too busy doing their day job (or in the case of science types just find it too much fun) to be interested in taking 8 years out to sit in the commons and groan whenever Dorries or Ruth Kelly open their mouths.

Give them the opportunity of a working peerage when they're getting older and scaling down their workload, and they might well be happy to serve their country, turning up for votes and committees where their expertise is valuable, but staying in the lab when discussing tax credits or something.