现在英国把探亲和访友分两类的,下面的关系属于family visitor
your husband, wife, civil partner, father, mother, son, daughter, grandfather, grandmother, grandson, granddaughter, brother, sister, uncle, aunt, nephew, niece or first cousin (the son or daughter of your uncle or aunt);
the father, mother, brother or sister of your husband, wife or civil partner;
the husband, wife or civil partner of your son or daughter;
your stepfather, stepmother, stepson, stepdaughter, stepbrother or stepsister; and/or
a person who has lived with you as an unmarried couple for at least 2 of the 3 years before the day when you apply for entry clearance.
你的堂弟如果属于niece or first cousin的话(简单的说就是你们有共同的爷爷奶奶或外公外婆),那么申请family visitor,否则申请general visitor(如果堂很远)