Can anyone help, have I been paid wrong? Not received expected wages..

If your pay month starts on the 1st of the month and you started on the 8th then your first month pay will be less 8 days. You don't get a full month pay regardless of what date in the month you start.
Annualised salaries are actually worked out over 365 days rather than the number of actual days so you'll have had 8 days pay deducted.

Likely to be a combination of the above. You'll only get paid what is effectively a pro rata of the full time estimates salary as you don't work 52 (minus standard holiday) weeks of the year, you work 52-13 or whatever. And the FTE tends to be full time hours, which you probably don't work at 0830 until 3 or whatever. I remember getting a shock my first year working as a TA many moons ago.

And you may well be a portion through the standard payroll month.

What tax code has been used?

How many weeks a year are you paid for? It will be in your contract - 43.6 in our LA includes 38 weeks (term time) plus holiday pay. In the role you are doing, I’d be surprised if you were paid 52 weeks. Which probably explains the difference.

If insets aren’t part of your contract, you may need to claim additional hours - this is what our support staff do. Speak to your SBM/HR for clarification.

It may be pro-rata'ed. For example, if it was advertised advertised £14,000 FTE then your actual term time salary will be more like £10,000, then divided into 12 payments.

What does your payslip state? It sounds like you might have been put on the emergency tax code.

Are you on a term time only contract?
Because if you are, it’s technically part time & I remember a relative had this, but they essentially smooth your wages so that you’re not without pay in August. I never did fully understand it, but it could be connected to that.
You should have a payslip, and you’ll be able to see from that what was paid and any deductions, including tax. Ask your employer to explain your pay to you.

Emergency tax?

Is that £200 less on your payslip for gross salary, or £200 less on the net you received on your account?

If the later, then start by checking your payslip for any deductions (e.g. benefits, tax).

If you've already done that, the pay period should be noted somewhere on the payslip with the dates. It could be the pay period is different from what you were expecting as the previous poster said. If it's not on the payslip, you could ask HR/payroll department.

Personally I'd wait the second month to raise any complaint, as you're then guaranteed it's a full month.

Are you sure you pay isn't pro rata? Schools might advertise your role as the pay being for full time 52 weeks of year, but because you get school holidays, the actual pay could be the annual salary minus the holiday weeks. If this is the case the school should have made that clear.

Cant believe they are offering an apprenticeship as a TA! The salary must be terrible considering TAs are paid peanuts anyway!

Are you paid a week or two in arrears? Payroll cut off may be a week before pay date, so while you have worked 1-25 Sept (presuming 25 Sept is pay day) the 'payroll' month is actually 18 Aug - 18 Sept, so you haven't worked a full month in your first month. Made up dates obv but next month should be your full pay.