Old style light pull replacement

[Daddy Boots]

My old style WC light pull has been tugged too often! The old switch/isolator seems to be a lighting circuit loop in and out with a pair of reds and a pair of blacks at the top and a single red and black off the load going to the ceiling rose (effectively 3 x T&E but actually 1 T&E, 2 single black and 2 single red&E).
To use the new connector do I put the loop live (2 reds) into L1, the rose live red into L2 and put the 3 black neutrals into a wago/block?
Getting a wago/block in in going to be a real pain, is there an alternative way to wire up?

 

[terryplumb]

Your old switch is a double pole ,new one isn't !!
If you replace with a double pole switch you won't need a connector block

 

[333rocky333]

Also I would change the base, the threads on the new ones are often different and its not always an option to use the old screws, as fatness and length varies.
Therefore, test fit the new on the old base unwired or just change the base first whilst its exposed, rather than find out after you have faffed about wiring it.