Thanks for your replies guys.
The full story is, I worked at this place for just over three months, during this three months I never received a contract. It's my understanding that an employer is legally bound to give a contract within two months.
I have left this job in order to start a new job that pays more per week, and pays out every two weeks.
To start this new job, I need to have courier insurance, which I needed my previous paycheck from my last employer that I've just left, to pay with.
On top of this, I'm prioritising getting rid of my overdrafts etc, my bank phoned me up a few days before I told my last employer that I was leaving, and they asked me to pay £25 into the overdraft account on the Friday (28th, just gone, which should have been payday). I was unable to do that so now I've been charged.
I've also been hit with a £50 charge on my other overdraft, which would not have happened if my money had gone in on the date it was intended to go in.
Further to that, I spoke to one of my co-workers on the Friday and asked if she had been paid, she said she had.
The company is an independent company based in Oxford UK, there are no head offices or big corporate things going on, everything is dealt with where I worked.
They've never been late on payment before, I have no contracting legally binding me to a term of holding wages by my employer, I have bank statements and payslips from the employer which prove I was working for them and paying tax etc, we all get paid on the same day, others have been and I have not been, now considering payday was only a week away from when I told them I was leaving, I don't believe they could have just glossed over and forgotten about me innocently, I'm getting late bill charges from my overdrafts and I'm getting charged for my phonebill being unable to come out of my account (it's set up by direct debit) and I can't legally start working for my new employer tomorrow as I don't have courier insurance.
The plus side to all this is that my family have fortunately decided to pay the first £70 odd pound payment for the courier insurance, but due to timing etc, they can't be sorted out until tomorrow.
Also, I was excited about seeing how much I got (should be around £1400), so that I could start automating my funds and paying off the things I need to!