Find the studs. Stick up a couple of battens across them. Mount TV to them.

GeeFix Plasterboard Cavity Wall Fixings Hollow Wall Anchors Heavy Duty (Pack of 4 Fixings) https://www.amazon.co.uk/dp/B0196MJM8S/ref=cm_sw_r_cp_api_i_RiylFbXAS3RJW

or will it be a small gap between plasterboard and brick and i just need to find longer plugs and screws?

Don’t do that, your screws will just pull the plasterboard towards the brick. Nasty. If the wall’s dot and dab (tap it and you should find solid spots, but they will be blobs rather than lines as you’d get with studs) then a set of these will see you right for £6

Longer screws, through the plasterboard into the block work.
Before you put your plugs in inject some no more nails between the board & block in a circular motion, to fill the gap & strengthen it.

The applicator gun makes it quite an enjoyable experience too

There’s a tool?? I just used an impact driver 🙂

You won’t have studs on an external wall, dot and dab will leave you a void. For a big plasma I’d use shield bolts (what I did) with a bit of luck you’ll be able to get a couple of them through a dab. If you can’t get through a dab then the plasterboard will compress, a couple of spacers around the bolt between tv bracket and wall will sort it, the tv fixing kits often come with them. Just putting longer/bigger screws in won’t help as the plasterboard flex will prevent the plug doing its job.

Corefix is the other option, I had everything I needed in the tool box but I’d probably try the corefix if I did it again, it’s a clever little system.

Personally I would want a better fixing than just into the plasterboard.

I should have expanded a little on my comments about the corefix plugs.

Up until that point I’d tried 90% of the methods mentioned (apart from the other anchor bolts), including setting a piece of threaded bar into the blocks using chemical cement then spacing the void with nuts to give a solid stud anchor point for the TV bracket.

That worked perfectly, as did chopping out the plasterboard, fixing a batten to the wall and then the bracket to that.

However, the simplicity of the corefix is a single 10mm drill bit is all that’s needed. Have to make sure its a good one and that the drilling is relatively precise to avoid an oversized hole – but that’s the case for anything drilling into brick or blockwork.

edit- you could use something like the gripit system. Ive used these loads for partition walls and they are good. Trouble is they stand a fair amount away from the wall and when you have a proper wall to anchor to -you’d be daft not to imho.

Sounds like someone has built a dry lined wall over the original, sometimes done if the walls were old and they wanted a better finish or they had damp.
What I would do is cut a hole in the plasterboard the same size as a double dry lining box where the tv will cover it. Then you should be able to find where the wooden joists are. Fasten the bracket to the joists with standard wood screws, get plenty in and it will be fine.
No way would I fit a 65” tv to just the plasterboard.

Well that’s a bit of a nuisance for you!

With that sort of distance from wall to brick I’d investigate sinking the whole tv in and mounting it close to the wall behind. A much bigger job of course, but would look great sunk into the wall with a proper surround – could put lighting behind and make it look real flash.

Think I’d want to look further in to see why it is so far away and also how the joists are located and secured. If they are solid, you could make a metal frame to span the joists on the outside of the wall and mount the TV bracket to that through some tapped holes. Could secure the metal plate to the plasterboard using gripfix as well as to the joists with conventional screws.

A bit of work but easier than messing about behind the plasterboard.

Think I’d still take a section out to see what’s going on.

I’m sure if you ask where your studds are peeps on here will know. 😁But more importantly where was the picture outside a shop with some sort of jester statue?

I used some of those screwfix fixings for my 65″ tv. They’re not going anywhere anytime soon.

Just checked back on this thread and, well, so much for my relentless advocacy for Corefix then! Though tbf working out what kind of wall you were fixing to should have been the first thing you (or, gasp! your son) did.

I’d go wall anchor then as the next easiest option, and I’d use a setting tool in spite of some of the above advice saying you can get away without. Since you’ve apparently got loads of room behind the plasterboard I’d go long, like 52mm because they’re stronger and well, why not? All that assuming your plasterboard is sound and dry and standard thickness.

If I was really paranoid or I wanted to fit a swinging bracket I’d maybe look at these Geefix things, but I’ve never used them myself.

a compromise of 2 big old solid plugs and screws into the wood, and then 6 of them Geefix jobbies into the plasterboard.

I’m all for safety but that seems a bit excessive tbh, 4 mounting points should be plenty if they’re done properly. And why would you be using plugs if you’re screwing into wood, or have I misunderstood that?

2 plasterboard fixings will be fine, especially if it’s not cantilevered out.

Don’t plug wood, decent size bolts and pilot hole it first.