There aren't too many to choose from for someone looking to do the traditional zero to hero path nowadays.
You should really look at all options as there are multiple paths you could take. They will generally be cheaper and not too different in terms of time.
Whatever you do, do a lot of due diligence before handing over a penny. Do not just fall for marketing or a good sales pitch. Do not fall for an assessment which passes most people.
Visit the school.
Talk to real students out of the earshot of staff. You need to find out about whether the school is meeting promised timescales, costs and whether the students would recommend the school overall.
Look out for whether the instructors/ non-sales staff friendly and approachable.
Look at the aircraft. Think whether they look in good condition or not and whether there are lots of 'inop' stickers everywhere. If it's a nice day and 3/4 of the fleet are sat on the apron, it's only sensible to query why.
Try to sit in on a class or even backseat a flight.
Look at the school's financial and operational standing.
Whatever you do, don't pay masses of money up front. Ideally pay by credit card. Debit is second best and bank transfer is the least secure option for you.
On the schools, CAE, for example, has had massive delays. They sent a lot of their easyjet students to Spain when there was basically no capacity for them to fly there. I am pretty sure most of them would advise you against it.
There are UK CAA schools outside of the UK which you might want to consider. FTE Jerez is one example and I've only really heard positive things about the place.
Take note of what the person above says too. Certain schools are on the brink and they will take your money with them when they go down.