Nearly 100 familes and over 4000 different species of beetles occur in Britain. Here are some I have encountered on Skye:

Family: CARABIDAE

Carabus glabratus

Carabus granulatus

Carabus violaceus

Pterostichus madidus (Black Clock)

Pterostichus niger

Cicindela campestris (Green Tiger Beetle)

Paranchus albipes

Bradycellus verbasci

Family: CURCULIONIDAE

Otiorhynchus singularis

Otiorhynchus sulcatus

Family: ELATERIDAE

Ctenicera cuprea

Athous haemorrhoidalis

Dalopius marginatus

Family: GEOTRUPIDAE

Anoplotrupes stercorosus (Common Dung Beetle)

Family: SILPHIDAE

Necrodes littoralis (Shore Sexton Beetle)	Nicrophorus investigator (Sexton Beetle)
Nicrophorus vespilloides	Nicrophorus humator

Family: MELOIDAE

Meloe violaceus (Violet Oil Beetle)

Family: CHRYSOMELIDAE

Plateumaris discolor (Upland Reed Beetle)	Neocrepidodera (A leaf beetle)
Crepidodera fulvicornis	Galerucella tenella

Family: CANTHARIDAE

Rhagonycha fulva

Rhagonycha nigriventris (formerly R. limbata)

Cantharis nigricans

Cantharis cryptica

Cantharis pellucida

Family: CERAMBYCIDAE

Leptura quadrifasciata (Four-banded Longhorn Beetle)

Rhagium bifasciatum (Twin-banded Longhorn Beetle)

Family: DASCILLIDAE

Dascillus cervinus (Orchid Beetle)

Family: STAPHYLINIDAE

Staphylinus erythropterus (Rove Beetle) (photo by James K. Lindsey)

Creophilus maxillosus (Rove Beetle)

Family: COCCINELLIDAE

Aphidecta obliterata (Larch Ladybird)

Coccinella septempunctata (7-spot Ladybird)

Useful links:

UK Beetles The Coleopterist UK Beetle Recording Amateur Entomologists' Society UK Ladybird Survey