HI, does anyone know of any good London hotels with Balcony's?

The Berkeley, Knightsbridge.

How many hundreds (thousands) of $/£ per night is your budget?

I wish I was thousands haha, I know London can be expensive per night.
ideally £300 tops per night if that is possible.

I don't think you'll get any sort of hotel room with balcony in central London for near £300. £300 doesn't really get you posh in London - though there are lots of decent hotels in that price range and a bit lower You might do better looking for a rental apartment/flat -- more balconies on apartment bldgs than on any but the poshest of hotels. Do you specifically need a balcony?

Thanks for the reply, I shall have to take my budget up a bit more then, something the mrs was hoping for 🤷‍♂️

Will have to rethink my budget then.
Did find one at Camden lock but was wondering if any others available

A hotelroom with a balcony is not common in London. I can only think of penthouse suites with terraces, as the mentioned Berkeley, costing thousands a night. I think The Laslett in Notting Hill must have rooms with balcony, on the first floor on the street side, but these will be the more expensive rooms. It will be more than 300, maybe 400 depending on the dates.
These period terraced houses often have a balcony on the first floor, there are other boutique hotels in buildings like this. If the room has a balcony, it will likely be a superior room or suite.

Thankyou for your knowledge and assistance.

just a quick fyi ‘in case’ - re tulips’ post - UK 1st floor is American 2nd floor

If you check on booking.com's site you can filter room amenities by clicking on "balcony."

We had a balcony at Number Sixteen in South Kensington

You noted the OP's wish for a balcony, but probably missed the bit about budget, Have no idea the OP's dates . . . but for random dates in mid/late-June, the cheapest room at Number 16 is £513 . . . and it does not have a balcony.