You have obviously sussed the answer to your own question.
For a number of years now the UK caravan has been putting on weight as fast as the general population. This has been partly due to the desire of the UK caravanning population to take with them every accessory known to man, or woman. So to cater for this market requirement the manufacturers have obliged by including large washrooms, full cookers with electric hotplates and heavy upholstery etc. Add in the Tv hookups and all the gubbings and the pounds, or kilos add up.
The Continental manufacturers have approached things differently by providing lighter vans with less gizmos and naturally have made inroads to the UK market, as obviously their costs are lower. In fairness a number of the UK manufacturers have woken up to this and now provide lighter versions of their vans.
A lot depends on your type of caravanning experience. If your heart's desire is to sit weekend after weekend on a possibly damp site in the UK then having a lot of home comforts is a good idea. If your idea is to head for the sun and measure vans by the 'Ambre Solaire Factor' then a different type of van will suit your needs.
Really, it is up to you. If you look at the availability carefully you will find vans of all types that will possibly meet what you are looking for. Some people will not look beyond a 23 foot twin axles with all mod cons, while others are perfectly happy with a tiny Eriba. The answer is not to be restricted to what is possibly on the local dealer's forecourt. Go visit some Shows and see the whole range that is on offer. Use the Internet to look at all manufacturers, even vans that may not be obviously available here. If you plan a lot of Continental touring then a door on the 'other side' can be an advantage, and as I own one, is certainly no handicap here.
The conclusion?? Go look carefully and take your time. You will find what you feel is best for you out there, sonewhere.