Thanks. It's probably time I bought a new suit anyway. Definitely not normal clothing for me.

Suit and a black tie.
Sorry Sandy, while everything else you say is probably correct only plebs turn up to a funeral in casuals.
Went to one a few weeks back, I put on a (the) suit but quite a few wearing normal clothes. Ech the bloke was popular, must have been 600 people at the church and the clubhouse they hired was packed. When I go it will be about three people in the garden shed.
Don't mess around, suit and a black tie. It's the least you can do to show your respect for the deceased.