Should I always increase my credit card limit?

Interesting, is it possible to get the UK Amex card as an Irish citizen residing in Ireland?
 
Hi, I was recently approved for a mortgage with PTSB. My partner and I both have high limit credit cards with zero balances. They negatively affected our borrowing capacity. We didn't need any more than we were approved for. However, the mortgage advisor handling our application did say we could have closed one card off or reduced the limits if we needed to increase the amount of the mortgage.
 
yes i had something similar where avant viewed my high credit card limit and high overdraft limit (both unused) as debt effectively.