Having moved from a UK TP job to LCC I would make the following observations:
Pros:
I now have more money, more days off, more variety of work, more challenging/stimulating/interesting route network, improved job security, better prospects, better staff travel, better company systems, better flexible benefits, a great share scheme.
Cons:
Earlier starts/later finishes.
No regrets here nor amongst any colleagues who have made a similar move.