Of course it matters if a go around is an extra £25. Not to every pilot, but to way too many...
To put that in perspective:
Where I fly (Sweden), a yearly fee of about €500 (for a Cessna 172, PA28 or similar) gives unlimited landings at almost every airport in the country, regardless of how many landings, touch and goes or takeoffs you do... The fee is paid by the flying club on a per aircraft basis and included in the club membership fee, so you pay practically nothing for your landings, no matter where you go. Still the level of service, as far as I know, is at least as good as for British airports.
Why in all the world do you agree to such outrageous charges???