Throwing my own views into the basket as well - although it isn't football relates. But as the thread has moved towards Sports Photography in general.
I am coming from a different angle, as I started my 'photography career' while living abroad - and still work mainly for foreign media.
One huge obstacle that British freelance photographers face is the amount of 'red tape' and regulations and accrediting bodies. So starting out is probably the most difficult thing (IMHO) in the UK.
Another fact that makes things a little more difficult is the small amount of sports that the National newspapers cover. Which I have learned due to the fact that I cover mainly sports that are considered minority sports in UK.
Where I started my photography, I knew that any sport sells and there is demand for the images (be it swamp football league, finnish baseball, floorball, womens footy) in the papers all the way to the National papers.
Also - Finland isn't a country that is over populated with the 'big boys' (getty, ap, etc..) So a small fish has plenty to pick in the sea of sports over there..
And one thing that also matters : Who you know.
Pictures aren't everything, I have seen hobbyist togs who take great pics. And give them away for free.... because they like the sport. I have seen professional togs taking average/crap images and selling them for £100's.. because they know the right people and have the contacts.
Coming back to UK, I thought swap over and cover lots of UK sports for the papers here.. but that didn't quite work out. Suppose West Midlands is rather well populated with 'togs' as well..
So, my work these days is 80% abroad.
This includes sitting plenty in air planes, airports and various kind of transport. Also seeking out the best deals on hotels, etc.. to maximise the profit from each job.
To give you an example of my week...(next week)
Monday : editing weekends photos
Tuesday : conducting interviews with players (via SkyPe)
Wednesday : fly to Pisa - drive to Rome. Game on at 8pm
Thursday : After the game finishes and editing is done - drive back to Pisa (that's about 200 miles/each way). Then fly to Barcelona, where I have another game at 8pm.
Friday : Early morning flight back to Brum - then off to Sheffield for a game at 7pm.
Saturday : Drive to Worcester for a game at 5pm (after enjoying Villa - Chelsea .. as a fan)
Sunday : Wheelchair basketball in the morning and Ice Hockey in the afternoon.
On top of this I try to keep up constantly writing game reports, interviews..editing game videos..
Now - what will I have left in the pocket after all that ??
A week like that should bring me around £400-500 (after travels) - and there is always a chance to make some sales at the games. Which can increase the income considerably (I think the best increase was £3000 on top of that.. but that really was ONE off due to capturing a Killer Image.. more luck that skill).
Most people go 'WHOOOO' when they see the travel and money.. but it isn't all fun and games.
First of all, you spend a lot of time away from the wife, you don't see your home too much, you have to live on fast food/restaurant grub, constantly wondering if your gear gets in as hand luggage, rushing to get the emergency exit row seat with Ryanair, sometimes you get to stay in a nice hotel, sometimes a crappy hotel, sometimes you sleep at the airport and don't even get me started on the unreliability of Wi-Fi in certain countries (don't like Italy)...
So there are easier ways to make money..
As with any job, you got to enjoy what you are doing. And for me, at the moment it is working out.. but doing as Freelance, I do need to find my own clients week-in / week-out.. so you are never sure on the income from week/month to next.
Do i like what I am doing? Yes. Is it for everyone? No.
Just a little post from me... not sure if it makes it any clearer to you whether you should give it a go or not...