What? No it doesn't. IT contracting may be one of the few ways he can earn the sort of money he's after in that short of a time frame. Plus, with contracting you are effectively self-employed and can use various tax shenanigans (e.g. pay yourself minimum wage salary but take a dividend from the company - dividends are taxed lower than income) to reduce your tax level and increase your effective income.
To do this properly though you need to have good skills in a specialised area - something like Oracle Databases, MS System Centre suite, VMWare, SAP, etc etc. If you have the right skills it's much easier to get a contracting position because the barriers to entry are much lower than full-time permanent positions. Plenty of positions come up for 6-18 month positions at day rates of anywhere between £400-1000 with these skill sets, if you can blag your way on to one of the lower paid opportunities that gets you the experience to earn more for your next position.
See here's a plan for you OP:
1. Skill up in a specialist area of IT. This may include buying yourself some kit to practice on, and will definitely include paying to get the relevant qualifications which will be a requirement for some positions.
2. If possible get some practical experience as a full-time in your chosen specialisation - get a job as a low-level VMWare guy if that's an area you fancy. Gain experience and contacts.
3. Set yourself up as a self employed contractor
4. Apply for as many contract positions in your area of expertise as possible until you get something. There are shortages in many of the areas I listed, hence why people are willing to pay contractor day rates. Be prepared to travel for the right contracts, definitely to London, maybe abroad - UAE/Qatar/Saudi are red-hot for IT at the moment if you can stomach it. Many contracts will include expense allowances for travel/hotels.
5. Get the experience, finish your contract, move on to the next. It's not fun job hunting every 6 months but the high rates can give you flexibility to take months off between contracts if you want.
I went from a general IT dogsbody to a specialist area which I had no experience, within 5 years I was easily in a position to go as an independent contractor - I haven't given up my perm job yet but I have moonlighted on short 5-10 day contract projects at £500+/day during my leave periods.