Found 25 retailers starting with "I"
Various Cashback 
2.63% Cashback 
Up to 1.50% Cashback 
Up to 1.50% Cashback 
Up to 3% Cashback 
5% Cashback 
5% Cashback 
2.5% Cashback 
3% Cashback 
3% Cashback 
1.50% Cashback 
1.25% Cashback 
Up to 5% Cashback 
5% Cashback 
Up to £2.25 Cashback 
3% Cashback 
1.5% Cashback 
3.5% Cashback 
Up to 7.5% Cashback 
3% Cashback 
2.5% Cashback 
Up to £27.50 Cashback