Just fitted new lights the new on just have a live and neutral with earth screw but I had ceiling rose before and unscrewed it there was spaghetti junction, old brass bridge blocks ' basically I split all the wires out of the plastic coating and separated the brass blocks put wiring correctly into the brass blocks and insulated them with insulating tape is this safe and OK if not what else can I do the lights do work incidentally but just want to check I've done o.k

I am going to say that the wiring should be joined in wire nuts, not brass terminals then taped. Doesn't sound all that safe to me.

Maybe someone from the UK can verify if this is common practice and code approved.