Traditional British cuisine had a reputation of being bland and heavy. Pleas Explain this statement!?!

(i) Meat and two veg I would suggest are common over most of Europe not just the UK.

(ii) I think its an attempt to introduce sweet sauces adapted to the local palette

(iii) Absolutely false a beef stew with Worcester Sauce and beer or or wine has great depth of flavour we used cloves, anchovies, vinegar, walnuts, tamarind, and cayenne in Victorian times.

(iv) False traditionally the Sunday roast stretched to 2 or 3 meals leftovers on the Monday and sometimes the Tuesday meat was bought in sides and the complete animal needed to be sold poultry was expensive till recently so ******* sausages and many more foods were served a little meat and load of veggies to bulk it out and make money go further

(i) True
(ii) False: It was an adapted recipe from Indian cuisine, and originated from the UK, but it is not a "Traditional" dish.
(iii) To someone from a country that uses a lot of spice and different flavours in there food, then potentially something like Fish and Chips would seem to be bland to them, as they would be more used to the flavours and spices that they would normally eat.
(iv) False. Sunday Roasts are exactly as they say, Sunday roasts and is normally a late afternoon meal(Usually, it is referred to as Sunday Lunch)

(i)true, very common

(ii) sort of true. Indian food became very popular in the UK and Chicken Tikka Masala is an Indian type curry dish that was created by the British.

(iii) no idea

(iv) A Sunday roast is usually eaten as the midday meal, not the evening meal, but this may be different in other parts of the UK than where I live. A typical sunday roast is a meat joint of some kind, potatoes, gravy, yorkshire pudding and those two veg from above.

(i) True
(ii) False, it is an Indian dish using spices and tandoori techniques from India
(iii) True because we don't know how ti use spices. Try any recipe from Tandoori Cooking Expert and you'll see why.
(iv) False, it is "Sunday lunch" so afternoon meal.

http://www.tandooricookingexpert.com/

(i) True. If you can afford it:
(ii) True. You'll find it difficult to find the dish in India/Bangladesh unless you're eating in a 5 star hotel catering for tourists
(iii) True, but most of my Vietnamese friends have adapted
(iv) False. The traditional Sunday roast is/was served at about 1 o'clock (13.00 hours).

(i) True

(ii) True - Chicken tikka masala was created in Scotland. I wouldn't call it an Indian dish just because it uses Indian spices, as I wouldn't call it an American or Italian dish for having tomatoes.

(iii) True - Boiled foods are bland and tasteless to the British too.

(iv) True

True,
False,
Likely, it's a different flavour with different spices used.
False, it's the last meal of the day (dinner) On a Sunday.

English

True
False
Possibly
False (in this part of Britain anyway)

True
False
True
True

The only spice the Brits use is pepper, if you can call that a real spice.