If the UK didnt get any support from the US they couldnt have survived the losses in the Atlantic.

1942 was AFAIK a tough year for Allied shipping. If it hadnt been for the US the UK couldnt have replaced the losses, nor expand the number of escorts and long range aircrafts that turned the tide in early 1943.

Germany wasnt strong enough to invade UK but IMO could have starved them into surrender somewhere between late 42/early 43.

The north African campaign in 1942 would also have been different if the UK had been alone. If Rommel had a bit of luck he could have taken Egypt in late 1942..


CBR