If you are a British citizen your spouse should be granted entry clearance as a spouse with limited leave to remain for 24 months. (Less is of course better, as you can apply for ILR sooner.) Your spouse will be able to work and apply for a national insurance card and use the NHS. “No recourse to public funds” means your spouse will not be taken into consideration in calculating your unemployment benefit (but you may apply for yourself) nor will you get any recognition of your needs as a couple when it comes to public housing or housing benefit. After the 12 months are up, your spouse may apply for indefinite leave to remain, and those restrictions are lifted.
If you have been married for more than four years your entry clearance should be marked settlement and indefinite leave to enter granted. For some reaon the HO website says these endorsements are “rare”. Don’t see why frankly.
You will have to be in the UK or travelling on the same flight as your spouse when he applies for settlement. A British citizen present in the UK for whatever length of time is considered “settled” for the purposes of the legislation, and the legislation as I understand it is for a foreign spouse joining a settled person in the UK. The purpose of the visa (entry clearance) is “for settlement”.
As an aside, if you and your husband just turn up at Heathrow (and as an Aussie that is an option) and attempt to get in on a tourist visa, the IO may suspect he is trying to immigrate on the cheap and refuse entry altogether. Whether going for a holiday or for settlement I would contract the BTCO.
This all assumes your passport says “British citizen”.
Here is a link (pdf) to the Home Office website (which works for me): ind.homeoffice.gov.uk/ind/en … h%2006.pdf
The Hamdbook of the Joint Council for the Welfare of Immigrants is the most comprehensive guide to all this, but the Home Office website is startlingly comprehensive and explanatory. If only there was an equivalent in Taiwan.