This.
Plus, have you had advice about your debt and reduced the interest as much as possible, ie by a formal arrangement or by transferring the loans and credit cards to as low an interest rate as possible?
Where are you with your mortgage, is it likely to increase with rising interest rates before you're out of debt?
Hopefully 3 years will fly by and you'll feel far more comfortable when you're debt free, then you'll be able to pay your mortgage down, save more so you can do things like replace the car without borrowing, save more for the long term/retirement/loss of income, and also live a little more freely too.
Moneysaving Expert should be your go to for anything financial, you can get help with setting a comprehensive budget, check for better interest rates on your debt and get hints on saving money on other purchases, because every pound saved on an essential bill is an extra pound you can use to pay off debt.
www.moneysavingexpert.com/banking/budget-planning/
Also, this financial flowchart is useful to help guide you along the way, both now and in the future when you're debt free:
ukpersonal.finance/flowchart/
From the costs you've listed, as well as seeing if you can pay less interest, I'd say that you might be able to spend less on mobile phones and TV related things - do you actually need a TV licence and do you get enough out of Sky to pay £39 a month - you can get a lot of the content on Now TV for far less and there's always deals on the subscription.
For example Entertainment is normally £9.99 a month, but I'm just coming to the end of a deal where I'm paying £2.99 a month for 6 months - I'm going to finish watching This England this weekend, cancel it and switch to Netflix for a while. Now TV are also offering me 3 months of movies for £15, which is less than half price - we've had Now TV on and off for years and never paid anywhere near full price, you can just cancel it with a click or two on the website and they nearly always offer a deal to stay.
Finally where is the 'spare' £1150 pm going? If it's on essentials like some of those things mentioned by @AltheaVestr1t then you probably can't do a lot about it, but anything that goes on mindless spending or things like coffees/lunches/eating out, try and reign this in and send more to your debts, or if the interest cost is low, use to boost your savings.