Ergänzend noch für Segelflieger auf Strecke - unabhängig von der Ausweichpflicht:

SERA.3225 Operation on and in the vicinity of an aerodrome

An aircraft operated on or in the vicinity of an aerodrome shall:

(a)observe other aerodrome traffic for the purpose of avoiding collision

(b)conform with or avoid the pattern of traffic formed by other aircraft in operation;