Thats the whole point of a VLCD, to keep it as a VLCD
the only reason you eat the 'measly' amounts is to bring the cals/ carbs up slightly either to suit the plan you are on or in the case of the 810 week, to raise your metabolism for a week to allow your body to recover a little as recommended by NICE guidelines.
TBH, when i was obese, i loved a mixed grill, loved a little too much maybe hence why I got obese... whilst I will eat fatty foods again it will be in moderation... But this plan is great for allowing you time away from those foods to see them for what they are...red meat/ sausages/ streaky bacon can be extremly high in cals and saturated fat, not the best food for getting and keeping us in good health. However as an occasional treat when we are fit and slim, it would be fine.
To eat this sort of food on any weightloss plan seems frutiless to me though as to me, it would mean I wouldn't be learning anything about being able to control my cravings.. like on SW I ate lots of these foods and didn't change my eating habits at all, therefore all the weight went back on.
This diet is for such a short time of our lives in the grand scheme of things, many of us have let our bodies get into a terrible state and to be granted the science and know how to get weight off this quickly, in such a short time is a gift to me....
CD has been formulated to work and work it does.... but we do have to make sacrifices. we just have to decide whether they are sacrifices worth making... for me weight loss verses high fat food no contest

good luck with your own weightloss journey
x