Okay, that's a fair candidate for tweaking. If you're going to the Lakes then you've got about the best selection of stuff to try on as you'll fine anywhere in the UK, so for anything where fit makes a difference (and that's... most things, to be honest) I'd take advantage and get it while you're there. You might lose a day, but you'll have stuff that you know works well on you for fit and you won't really get a good comparison of stuff shopping by web.
It might be possible to get the boots resoled. Otherwise, if you liked them before you've got a good place to start with a replacement, so check out Brasher's wares again.
If the jacket doesn't leak then might as well stick with it, though over the last few years weights of waterproofs have come down and breathability has gone up. eVent is more bretahable than goretex, Gortex Proshell is more breathable than XCR. But it may pay to spend your money on stuff where you'll get more than an incremental improvement (like your base layers, as you've already worked out).
You mention you've sorted the base layer... hope that applies to unerpants, as the difference between a good wicking pair of undies and the usual cotton fare we wear in "normal" life can be huge on a wet day. I would say wicking undies are the most useful sing;e improvement in my gear I've made in the last dozen years or so. Another often overlooked thing that makes a big difference at relatively low cost is 1st class socks. Many folk think £12 for socks seems ridiculous, but it'll typically make a bigger comfort difference than moving from a £100 waterproof to a £300 waterproof.
Fleece is pretty generic stuff. Noname fleece isn't really a problem area as it will keep you warm and is easy to care for. The more technical fleeces available are better, but well inside the laws of diminishing returns.
Soft shell is probably worth looking into as a way to spend money that gives a flexible outcome. The idea is it will keep most of the clag out while being far nicer to live in most of the time than a full waterproof, though you'll still need a full waterproof for heavy and/or prolonged rain. There's no shorthage of different garments or approaches with different points of compromise between full weatherproofing and maximum breathability. They may or may not include insulation. The Rab vapour Rise top is a popular light shelled fleece, which takes care of the midlayer and a soft outer layer in one, but of course you can't have one bit not the other... The most cost effective approah is probably a pertex windshell to pull over your fleece. The lightest are things like the Montane Featherlight are very minimalist but light and not too expensive, and pack away to almost nothing. More elaborate ones like the Buffalo Windshirt are a bit more expensive, a little heavier and bulkier (yet still light and small in absolute terms) and give you things like vents and pockets which make them useful as general wear to a greater degree.
That any use for starters?
Pete.