To get a job with Excel/VBA skills that might be advertised, you'll probably need to move to London - specifically the financial services sector. Although you might well find some jobs up there in Leeds - my guess is they'll be well hidden.
That said, it's very unusual to find such a job advertised for those skills alone (Excel/VBA) even in finance.
For example, i'm in Birmingham & my role is Head of MI for a niche UK Bank - I do use Excel/VBA extensively, but that's only about 50% - the rest revolves around developing reporting from SQL databases, using a variety of tools (VB, Crystal Reports, SQL 2005 reporting services)... aslo my current role was created to suit my skills & keep me interested/rewarded
& I guess would only ever be advertised if I left.
You may well find that this is that case with many companies - in that the "person" comes first, the "job" later. For example, in alot of companies, over time, someone becomes extremely useful by way of developing primarily ad-hoc solutions, until that person might be regarded as a "guru". The company may then create a role to suit them/retain them as opposed to the role existing first, so to speak.
Take a look at this link
http://www.itjobswatch.co.uk/jobs/uk/vba.do
Notice that it lists a number of other skills required as opposed to just Excel/VBA
- 1 3279 (36.03 %) SQL
2 3009 (33.06 %) VB
3 2965 (32.58 %) Front Office
4 2963 (32.56 %) Finance
5 2525 (27.74 %) Banking
6 2346 (25.78 %) .NET
7 2319 (25.48 %) Microsoft
8 2222 (24.41 %) Graduate/Degre...
9 2118 (23.27 %) C#
10 1966 (21.60 %) SQL Server
That said, you may find the following link useful
http://www.jobsite.co.uk/
Register & set up some searches using Excel & VBA as keywords - you'll quickly get an idea of what's available... Hope this helps.