Welcome Lizard
Start with the basics. What are your outgoings each month? Can you lower them? Food bills, dual fuel, water, mobile, sky/virgin can all be lowered by either ringing the providers and haggling (sky, virgin, mobiles) or by using less (dual fuel/water if metered).
You can pay council tax over 12 months, it doesn't save you money but the monthly payments are lower. We just used to fritter the money away on the two "free" months.
Foods an easy one to start with. Meal planning and shopping in Aldi saves a fortune over a year (saved us £1200 a year and we've not got kids). Don't worry if you hate the idea of shopping at aldi, I thought I'd failed when I realised sainsburys was out of our budget but I'm slowly converting the family to shop there too. People like the food and the gin when they don't know what they're eating. Packed lunches and picnics on days out save lots of money. I have a wicker picnic hamper from tk maxx and it feels very posh to have a picnic out of that.
If you set up a standing order to pay the cc off each month it will pay down quicker than if you pay the minimum payment. See if you can balance transfer to an 0% card. Talkinpeace does a spreadsheet for cc payments, I will find it for you, I'll lose this post if I click out.
Have a look at moneysavingexperts forums, brilliant advice for running the home cheaply and lots of debt advice threads.
If you set up a topcashback & a quidco account you can get cashback for setting up car insurance, house insurance, general shopping, swapping BB providers, new dual fuel tariffs etc. I got £600 in the first year on things I would have bought anyway.
YNAB is an app that lots find useful on here, it's free on trial and worth a look.