Reform the education system;
Bring back the grammar school tiered ability system.
Bring back discipline, give more powers to head teachers and teachers.
Remove subjects such as Citizenship (essentially brainwashing), Psychology & Theology (pre-university level), PE (as a certificated exam), etc.
Increase teaching on teenage pregnancy & how to avoid it
Force universities to admit at least 80% British citizens per annum
Bring in proportional representation.
Reduce the number of MPs.
Create a written constitution.
Pull out of the Human Rights Act, make up a replacement (again, constitution?)
Be more aggressive with the European Union, and offer a referendum on membership.
Not bow to whatever America says.
Start (slowly & carefully) pulling out our troops.
Enter into no more unnecessary wars.
Change monetary commitments;
Reduce foreign aid.
Reduce top rate of tax (to encourage new businesses - see Ireland)
Increase Working Family Tax Credits
Retain the Pound sterling.
Increase investment in the Science, Engineering and Manufacturing industries.
Increase investment in/subsidies for universities offering Science-based courses
Return financial powers to the Bank of England.
Social & Citizenship;
Give the UK a new bank holiday (additionally, give each separate country their saint's day as a bank holiday)
Monthly cap on immigration
Start counting people out
Remind the BBC of its responsibility 'to inform, educate and entertain', encouraging the new-found interest in education
Public reach-out schemes - tours of parliament, perhaps TV programmes on what politicians do
Reverse the culture of victimisation (racism, sexism etc.) while maintaining laws to protect people who really suffer from these
Bring back the stigma of teenage pregnancy
Reform the child support and divorce system that offers little support to men.
Build more council houses
Bring back the idea of the family.
Subsidise the National Trust & other organisations that protect our heritage
Police & Security;
Increase police time on the streets, reduce paperwork
Invest in the nuclear deterrent
Make it easier to become a police officer
That's all I can think of off the top of my head.
Unfortunately, I'd never be able to enact this. Catholics (and Jews, I think) cannot become Prime Minister.
So much for a religiously tolerant society.