To be clear (my eyesight is not wonderful!):
you have two black wires going into the LH side, two bare wires, sleeved green and yellow into the centre and two reds into the RH side?
If this is so, then none of them are to a switch (because there would have been a short circuit). This is simply a point where wires join and so when you connect a lamp to the red and the black it will be 'on'.
If there was an old lamp there and you have a switch on the wall, then you should find another cable in the ceiling. This will go to the switch. The reds go together, but the black will go to the L terminal on the lamp and needs a red or brown sheath. The wire from the N terminal on the lamp goes to join the blacks. If it's a metal lamp the earths are connected.
If you cannot find another wire then the only answer is to fit a lamp operated by a pull cord.
To be clear (my eyesight is not wonderful!):
you have two black wires going into the LH side, two bare wires, sleeved green and yellow into the centre and two reds into the RH side?
This is one of those situations where a picture only paints half the story and you need to provide additional information to allow a diagnosis of your problem.
You appear to have two grey cables containing two blues, two browns and two earths.
That arrangement is going to light nothing up - I will assume that the new light is connected to this connector block via an brown/blue and possibly earth.
I will also assume that the rocker switch has no effect on the light.
How have you connected the new light to the connector block?
Was there originally a ceiling rose or was there just this connector block in its current configuration when you removed the old light?
I'm assuming from the thread title that when you connect a lamp to the brown and blue, it stays on all the time.
If this is the case, there must either be:
a. another wire or wires in the ceiling tucked away that connect to the switch(es).
or (less likely)
b. the wires at the ceiling position are switched, but the switch has been bypassed. The easiest way to find this out would be to open the switches you think are for these lighting points and see how the wires are connected.
To be clear (my eyesight is not wonderful!):
you have two black wires going into the LH side, two bare wires, sleeved green and yellow into the centre and two reds into the RH side?
If you need to find a tradesperson to get your job done, please try our local search below,
or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local