Pretty sure it's only the VC and GC which have a tax free annuity. Never heard of an annuity for any of the lower level awards as listed above. I notice that the website refers to "additional pensions" paid to holders of the MC etc. Anyone know anyone who is getting such an additional pension? Know a few holders of the DFC and as far as I know they dont get anything extra.
It was John Major who decided that the VC/GC gratuity of £100 a year was an insult (it had only gone up once from £50 since its inception) and raised it to something like the present figure.
Back when it was £100 I met a guy with the George Cross and he said he used the money to pay for a weekend in London for the p**s up for the holders of the VC/GC which took place every 2 years. Shows you how far £200 went then!