You can do it fairly cheap and the price of an all grain brew is about half that of the canned kits in the UK, assuming you have enough money to buy the grains in bulk - as in a full 25KG sack of grain that's about £25, plus the other speciality grains and of course hops. I did a 4% mild that was about £7 for 19L or so - it was certainly better than any extract kit I've done in the past
I'd recommend looking on the UK beer forums like Jims and there's another couple for second hand equipment and also go to car boot sales to look for boilers/coolers for mash tuns etc. Or freecycle might be good too
I got my cooler for free from a friend as the handle had broken and my boiler for £15 from a car boot sale. Then had to add an element to it from a tesco kettle and so on.
Work out how much you can afford to spend on equipment to see if you can make it work, or if I were you try and rope in a couple of mates to third the cost - if you do this though, make sure you get big enough equipment to make the split beer worthwhile!
As for the Brewferm kit, I've only done one and it was great - the oud bruin. Some beers last better than others, usually the darker and stronger they are the longer they will last. A bitter needs to be drunk young