This is FACT so you aren't...... 
Sometimes when travelling abroad one has occasion to use pay at pump only fuel stations, so here's the gist of it........have some cash about your person - always. 
For normal use UK cards are fine in shops/fuel stations/restaurants/supermarkets etc. and this also includes tollbooths, (only ever had a card rejected once at a southern Spain toll), carry some cash JIC
Some unattended/pay at pump fuel stations will not accept UK Credit OR Debit cards - not your old swipe and signature cards, but Chip and PIN and I'm not on about old fuel stations either....often there is a machine function which will take banknotes, you won't get change from any unused balance.
Belgium - my UK cards (which won't work in Nieuwerkerken ING Bank at all, but do work in Sint Truiden or Herk de Stad ING & KBC Banks, although the swipe function will not open the external doors, so one has to hang around like a dodgy chap waiting for someone to enter), therefore there is a lack of standardisation within the organisations............kin bankers. 
On comparison with Splodge's local/native cards, the contacts position for the chip is slightly different and the contact surface is considerably smaller than the UK variety.....so I reckon that's why, at some pay at pump stations INCLUDING new ones, your card may not work, (tested at old & new stations myself).
I know lots of peeps have never had a bother and generally, I don't either - just a heads up for summertime to ensure you have some cash for possible local assistance or for the often present banknote accepting card alternative.........
Replies on sealed envelopes containing folding type money appreciated but not acknowledged.............. 
no issues after i told them i was travelling by bike, had cash for the unexpected moments.
Sorted and on the Road Mick 
