In reply to Frankie boy:
In contrast to the first reply I didn't think the small bit of the Lakes I was in on Monday was crowded at all.
I didn't get there until mid-afternoon and I wasn't in a real honeypot area - Broughton Mills to do Stickle Pike "horseshoe". Only saw 2 other people at a distance, but when I peeked over down into the lower Duddon valley, there were loads of people by the river where it's near the road.
So, if you pick your locations and times carefully, you can avoid the crowds whilst out on the hills. But, you probably can't avoid the crowds all the time if you're camping.
You don't mention if you're travelling by car or public transport or how you're staying overnight.
Camping and public transport, maybe leave for another time. Car and (e.g.) renting a cottage, you have the means to avoid the crowds.
Final tip if driving, time your journey into and out of the Lakes to avoid peak times; i.e. very early or very late. Makes the whole experience so much nicer; I find that sitting in a queue for ages can really spoil my day.
Post edited at 08:16