Preheat the oven to 160°C/140°C fan
Put the flour into a large mixing bowl and season with a little salt and pepper. Toss the pieces of venison in the flour until coated.
Heat a tablespoon of oil in a frying pan and brown the meat in small batches.
Once browned and caramelised transfer the venison to a casserole pan using a slotted spoon and repeat, adding more oil to fry each further batch of venison.
Add the remaining oil to the frying pan along with the chopped onions and carrots and cook, stirring until golden, and then add the garlic bulb halves, cut side down.
When all the vegetables are caramelised add the rest of the seasoned flour to the frying pan along with the tomato purée and cook for a further 30 seconds.
Pour the pale ale into the frying pan and stir well, scraping the sticky bits off the bottom of the frying pan and then tip the whole lot into the casserole pan.
Add the stock, Marmite, bay leaf, thyme or mixed herbs and redcurrant jelly. Stir well,bring to a simmer, taste and adjust the seasoning if necessary.
Cover with a lid and cook for 2 hours in the preheated oven until the venison is cooked. Check the casserole from time to time adding more stock if necessary.
Towards the end of the 2 hours cooking time, make the dumplings.
Mix all the ingredients together, season with a little salt and pepper and add 4-5 tablespoons of cold water until you have a slightly sticky dough.
Tip the dough out onto a lightly floured surface and shape into 10 equal sized balls.
Remove the casserole from the oven, taste and adjust the seasoning if necessary. If the sauce is looking a little too thick, add 100ml of water before placing the dumplings on top.
Turn the oven up to 180°C/160°C fan, return the casserole to the oven and cook uncovered for 25-30 minutes until the dumplings are cooked through and slightly caramelized.
Remove the casserole from the oven and serve immediately.