www.ultimatehandyman.co.uk

Adhesives for wall tiles seem to vary in price.
Bal on line £19 for 5 litres Wickes £20 for 10 litres.
Are the cheap adhesives good or do you get what you pay for
Also Wickes does not specify what stabilizer PVA etc

Tell us what tiles you are fixing- size + material + where you are fixing them , shower etc. and we can advise

I am using ceramic tiles 13 in x 10ins 7.9mm thick (B&Q) in bathroom and around bath with shower attachment.

Id use BAL GRIP, and BAL microflex grout, both should be available at your local tile merchants