Dimmer switch replacement (led)

[JM2]

Short ver.
I'm looking for recommendations (brand/supplier I'd like to be able to buy just one) to replace a dimmer (standard switch size, happens to be in a plastic b/box but an sleeved earth looks present (not tested)).
It controls 6-7 fairly modern led downlights (thinking they are 230v).

Long ver.
The switch has failed mechanically and is difficult to switch on (push button on/off), when on is fine and the dimmer works well) but this is a replacement already (from the original fit) so very reluctant to replace with the same.

Original markings:
BG
Telford England
Compatible with dimmable LED's and CFL's (sic)
DM400AP
60-400VA
2 WAY PUSH (but doesn't need to be a 2-way switch for this function - do they ever?)
It has an adjustable preset - I assume for the minimum reliable level.

Any thoughts?

 

[ban-all-sheds]

Watch the minimum load - do your 6-7 downlights (why does the number vary, OOI?) total 60W? Not that that will have caused the mechanical failure, but you should make sure any replacement will have its requirements met. Would love to know how it dims fluorescents.

 

[winston1]

Long ver.
The switch has failed mechanically and is difficult to switch on (push button on/off),

Any thoughts?

With the power off remove the knob (probably just pull off). Apply fine oil (not WD40) to the spindle where it enters.

 

[bernardgreen]

Winston's suggestion should be treated with concern. Oil is inflammable and switch contacts make sparks when operated.

 

[JM2]

1a. It is seven lamps (my folk's house not mine, I wasn't sure).
1b. Total 60W (or maybe 70W now); don't know. Small downlights in the ceiling where you can see the individual leds in an arc in each. I'd go with 5-10W each.
1c. CPLs - I'm just reporting what my photo shows, I thought writing it out was better/quicker.

1d. When replacing, yes I'll be trimming that copper (no tools with me that visit).
2a. I do think it is physical and did try to release the front knob but it seemed stuck fast. In the light (sorry) of it being the second one to fail like this I think an alternative type is warranted. If we can't find something suitable I might indeed give some Electrolube CMO a go (yes, I still have some).
3a. Noted.

Any suggestions as to a supplier/brand to replace it with ?