I only started walking in the Lake District in 1997 but now it is the focus of everything that I do. I started from scratch, everything I know is what I learned by myself - sometimes the hard way. Where do I begin? Let me start with the gear that I started with and the reasons why it was wrong.
I bought a pair of walking boots from Clarks; very nice looking but they were really road walking boots with not enough of a tread pattern. When I was walking downhill I frequently slipped onto my backside and my feet were always wet through even on moderately wet days.
I bought a waterproof Regatta jacket with a zip-in fleece; with the fleece in place I got far too warm after only ten minutes walking. The jacket wasn't breathable so wearing it in wet but warm weather made me sweat so much that I was wet through by the time I finished my walk. In any event the wet days in the Lake District overcame any waterproof properties that the jacket may have had.
I bought a rucksack that was adequate in size for the shorter walks that I started with but with no capacity for spare clothes, hat, gloves, food and water. There was very little waterproofing making it quite unsuitable to carry mobile phones, guide books or electronic car keys.
Learn the meaning of waterproof; it doesn't mean you won't get wet, it means you won't get wet as quickly as you would without the waterproofing. Windproof is more important, you can survive being wet if you can keep the wind out. If you get wet and the wind gets to you then you might not survive; don't underestimate how dangerous the wind can be, it is the master of the fells. The rain will make you wet, the mist will get you lost, the snow will make you wet and cold and make you get lost but the wind will kill you.
So what do I wear and use to survive and enjoy the fells? If you plan to walk only in daylight hours and in good weather then you've come to the wrong place, you don't need my advice but then you might not get the conditions you expect either. To find your way round you need the Plastic coated 1:25000 Outdoor Leisure (OL4 to OL7) maps and a compass that costs at least £19.95. In the event that you get seriously lost and it becomes dark you need a whistle, a head torch, a hand held torch and at least a plastic survival bag but ideally a proper bivi bag.
What you wear depends on how much you want to spend, the more time you spend on the fells the more money you will need to spend. Not having waterproof boots will make you miserable; I like leather boots that you can treat with Nikwax Aqueous Wax as you finish the walk and you can wax them before the next one. You still need good boots, I wear Scarpa SL's that are suitable all year round. The Scarpa SL is also B1 rated for C1 flexible crampons to complete their year round suitability.
I hate having to change clothes on those days when it blows hot and then cold, I like to carry only a single jacket that I either wear or put in my rucksack. Other people will take different garments to wear as individual layers and will add or remove clothing as the conditions change; it really is a matter of personal preference, how much gear you can afford and how much you want to carry.
The jacket is all important, the difference between hot and cold, wet and dry. On warm summer days you don't need to wear a jacket; altough, even at the height of summer, it can be cold or wet enough to need a good waterproof but more importantly windproof jacket. Gore-Tex is the most reliable brand name to look for; the label says guaranteed to keep you dry but it means only when the jacket is new. Even Gore-Tex jackets need to be cleaned and reproofed and the waterproof lining will eventually wear away but the Gore-Tex label is still the most reliable guide to waterproof.
I wear glove liners most of the time when it is cold, it makes putting big gloves on easier especially when it is wet. The hat should cover your ears and forehead, in wet conditions or when the wind is very strong and/or cold it should be possible to wear your hat under the waterproof hood attached to your jacket. I also wear a fleece neck-gaiter, it stops a cold wind from getting inside you jacket and prevents you losing heat from your neck and shoulders.
Check the BBC's guidelines safety on the fells and what to do in an emergency